Improvised Star Trek (general)
Improvised Star Trek explores the final frontier of comedy by turning Star Trek into an improv office comedy. Taking suggestions submitted on Twitter and Facebook, the cast (featuring some of Chicago’s top improvisors) creates a fully improvised episode detailing the adventures of the USS Sisyphus, a less enterprising starship. New episodes are posted every other week. To learn more about the show check out our website, facebook page, or twitter!
Improvised Star Trek is fan production. Star Trek is property of CBS/Paramount.

Something funky is afoot when the clothes on the USS Sisyphus go missing.

Improvised in a live performance at GenreThon 2019 at the OtherWorld Theatre in Chicago, IL

Recorded August 24, 2019

Includes cast warmups - full episode begins at 15:00


Rayna Caskey as Ensign Bobbi Intern
Dan Granta as Lt. DuFarge
Sean Kelley as Cmdr. Crick Watson, a shirt
Chris Rathjen as Cmdr. Corbomite Hayes, a shirt
Nick Wagner as Lt. Ch’arles Lorem, Gavin
Mary Cait Walthall as Dr. Zarlene Zonalzon, En. Operator, a shirt
Julia Weiss as Lt. Rita King, Ensign Spot, Michelln
Matt Young as Captain Julius Valentine Baxter, pants

Winner of "Best of the Fest" for the GenreThon

Video available at

Direct download: IST215_TheNakedWhenever.mp3
Category:general -- posted at: 3:44pm CDT

#209: Brevity is the

Rita ends things.

This episode was improvised on February 17, 2019 from a suggestion by Brian Sebby via Facebook.

Edited by Eric Scull

Sean Kelley as Lt. Cdr. Crick Watson
Christopher Rathjen as Cdr. Corbomite B. Hayes, Cloud, Bronson
Nick Wagner as Lt. Ch'arles Lorem
Mary Cait Walthall as En. Jill, En. Operator, Cloud
Julia Weiss as Spot, Lt. Rita King

Brought to you by Lagunitas through the Chicago Podcast Coop

Direct download: IST209_Brevity_is_the.mp3
Category:general -- posted at: 10:26am CDT

Grabbing a table, with the rest of his party on the way, proves to be one of Captain Baxter’s most infuriating missions.

Improvised February 3rd 2019 from a suggestion by Julia Bedford via Facebook.


Matt Young as Captain Baxter and Ambassador who likes to Annex

Chris Rathjen as Comdr. Corbomite Hayes, SpappleBees Employee and Mind Parasite.

Nick Wagner as Lt. Ch’arles Lorem

Sean Kelley as Cmdr. Crick Watson and Ambassador Glaukon

Mary Cait Walthall as Zarlene Zonalzon and Bartender/Mind Parasite

Rayna Caskey as En. Bobbi Intern and Maitre ‘d

Edited by Hannah Parsons

Sponsored by Cards Against Humanity via the Chicago Podcast Coop

Direct download: ISTep206TableforOne.mp3
Category:general -- posted at: 1:23am CDT

Captain Baxter crank it up a notch with some nightlife, Crick cranks it down a notch with some clones. From each according to their crank; to each according their notch.

Improvised August 12, 2018 from a suggestion by Emily Grenon via Facebook.

Edited by Roger Payton


Sean Kelley as Crick Watson, Friendly Native, Mary Shellys Brideof-Frankenstein
Eli Mandel as Rip Stipley, Andorianman, a Bluocrat, Friendly Native
Chris Rathjen as Corbomite Hayes
Nick Wagner as Ch'arles Lorem, a Bluocrat, Frankenstein, Friendly Native
Mary Cait Walthall as Zarlene Zonalzon, Ticket Agent, Swampthing
Matt Young as Julius V. Baxter, Vulcan Captain, a Bluocrat

Sponsored by Safehouse Chicago via The Chicago Podcast Coop
Direct download: IST202_BlueShirtGroup.mp3
Category:general -- posted at: 7:21pm CDT

Follow us on Facebook and Periscope to watch our 200th episode improvised live!

Or, if you're in Chicago, get your ticket to see us in person! 

Show starts at 8pm central time!

Direct download: IST200_promo.mp3
Category:general -- posted at: 2:32pm CDT

Crick meets Dracula. Finally.

Improvised November 4, 2018 from a suggestion by JJ Melcher via facebook.


Sean Kelley Lt. Cdr. Crick Watson
Matt Yound as Count Dracula, Renfield

Edited by Chris Rathjen

News this week:
Eli Mandel departs for Saturday Night Live (like a month ago)
Thanks to new reviewers!
Improvised Star Trek is on Spotify!

Direct download: ISTBonus_20181104_CricksDayOff.mp3
Category:general -- posted at: 4:58pm CDT

A breakthrough in communications causes breakdowns on the Sisyphus.

Improvised on July 1, 2018. Title suggested by Holly Hilton via Facebook.


Sean Kelley as Lt. Cmdr. Crick Watson

Julia Weiss as Lt. Rita King, En. Spot, Diane Swanson

Mary Cait Walthall as En. Operator, Dr. Zarlene Zonalzon

Eli Mandel as Lt. Jeremy Swanson, Rip Stipley

Nick Wagner as Lt. Ch'arles Lorem, T'Ripp (a Vulcan)

Dan Granata as Lt. Defarge

And special guest:

Eric Scull as CommuneX 5000


Direct download: IST197_IWillGoHailingNoMore.mp3
Category:general -- posted at: 7:37pm CDT



Mary Cait Walthall as Derkter Zerlern Zernerner
Julia Weiss as Lerternern Reter Kerng

Improvised June 24, 2018 from a suggestion by Tyson Thorp via Facebook.

Edited by Chris Rathjen


Matt Young (Captain Baxter) has appeared on the 15 Minutes With Lincoln podcast

Eric Scull (Producer) has a new podcast HR Unconfidential

Mary Cait Walthall has a Go Fund Me for her training at London's Embodies Poetics School

We're a year behind on thanking people for iTunes reviews! Sorry, we really appreciate it everyone!

Direct download: ISTBonus122_LerstinSperce.mp3
Category:general -- posted at: 6:35pm CDT

Ep 179: A Lorem in Winter

Lending medical aid to Lorem’s home planet of Trill, the Sisyphus crew find themselves embroiled in a violent fight for succession. Whoever becomes emperor will have a tummy to fill with royal worminess and that's apparently the "none-offensive" way of saying that so feel free to un-clench your butts.


Matt Young as Captain Baxter and Bardos Lorem

Nick Wagner as Lt. Ch’arles Lorem

Sean Kelley as Cmdr. Crick Watson and Shmax

Eli Mandel as Acting Security Chief Rip Stiply and Valcomer

Mary Cait Walthall as Zarlene Zonalzon and Henrietta Lorem

And Special Guest Eunji Kim as Ensgn Pie Hole and Aquitaine Lorem

Edited by Hannah Parsons

Improvised December 10th, 2017 from a suggestion by Tracy Holt via Facebook

This episode is sponsored by Backblaze Online Backup – It's a simple way to back up all your movies, photos, music, videos, and all other data for just $5/month. It’s simple and you can access all your data online, from wherever you are. Try it absolutely free by going to:

Direct download: IST179ALoreminWinter.mp3
Category:general -- posted at: 11:17am CDT

Talents emerge and a new crew member starts at the most important location on the ship: Starboards.


Rayna Caskey joins the cast as Ensign Bobbie Intern!


Also, you can see Chris, Sean, and Julia at the Cards Against Humanity Live! show at the Greenhouse Theater on Friday April 26th.

Direct download: ISTBonus-ChChanges.mp3
Category:general -- posted at: 7:23pm CDT

Space & buckets, together at last.

Improvised December 18. 2016 from a suggestion Rob Taffen

Edited by Roger Payton

Griffen Eckstein as James T. Jamms

Eleanor Hollingsworth as Counselor Ray ek

Sean Kelly as LtCdr. Crick Watson

Irene Marquette as En Holga

Chris Rathjen as Cmdr. Corbomite Hayes

Mary Cait Walthall as Dr. Zarlene Zonalzon

Nick Wagner as Lt. Ch'arles Lorem

Matt Young as Cpt Julius V Baxter

Sponsored by Know Your Company, a member of the Chicago Podcast Coop

Direct download: IST161_Spacebuckets.mp3
Category:general -- posted at: 6:00am CDT

The Cheloxian diplomatic mission, if that's even the right word for whatever this is, is getting complicated as Cmdr. Hayes and the crew try to decide whether they're really feeling what they ought to be feeling by this point in a diplomatic encounter. Meanwhile, Counselor Rayvek explores the relationship between Ch'arles and Lorem.

Chris Rathjen as Cmdr. Corbomite Hayes

Eli Mandel as Cheloxian Prime Minister

Mary Cait Walthall as Prittania and Ensign Operator

Sean Kelly as Lt. Cmdr. Crick Watson

Eleanor Hollingsworth as Counselor Rayvek and Porter

Nick Wagner as Lt. Ch'arles Lorem

Direct download: IST160-FifthContact.mp3
Category:general -- posted at: 6:13pm CDT

A special bonus episode, suggested by Ben Syn. Improvised on March 19, 2017.

Direct download: ISTBonus-Elementary-Crick-Watson.mp3
Category:general -- posted at: 3:28pm CDT

The Ferengi's attack during contest week, winning the Sisyphus crew a ship careening out of control. Oh and don't forget it's Christmas and the new Captain has banned use of the replicators. If it weren't for the magic of science this episode would be grimmer than Tiny Tim's prospects. 

Improvised September 4th, 2016 from a suggestion by Joe TeamValor Grönroos via Facebook

Edited by Hannah Parsons


Matt Young as Captain Baxter, Lt. Greg, Ferengi 3

Chris Rathjen as Comdr. Corbomite Hayes, Scooter

Nick Wagner as Lt. Ch’arles Lorem, Ferengi 1

Sean Kelley as Cmdr. Crick Watson, Jewish Engineer

Eli Mandel as Acting Chef Rip Stiply, Ferengi 2, Tiny Tim Engineer

Mary Cait Walthall as Zarlene Zonalzon, Ensgn. Operator

Guest Starring

Allison Ringhand as Barb Sandgwick


Ads voiced by Samuel Parsons

Direct download: ISTEp153_TheStarshipThatCouldntSlowDown.mp3
Category:general -- posted at: 1:58pm CDT


Improvised Star Trek will be performing at the Chicago Nerd Comedy fest in August:


We will also be performing and presenting panel discussions at NerdCon Stories from October 14th-15th:


Sean Kelley was featured on a recent episode of the Nerd Lunch podcast:


And many thanks for the many lovely recent iTunes reviews!

Direct download: ISTBonus-ZippityZoppityZoo.mp3
Category:general -- posted at: 6:46pm CDT

  An unlikely duo discuss breakfast foods while performing maintenance on the upper nacelles.  
  Improvised January 10, 2016 from a title by Paul Nichols via Facebook  
  Edited by Eric Scull  
  Christopher Rathjen as Cdr. Corbomite Hayes, Bronson  
  Matt Young as Pancakes Johnson  
  Sean Kelley's character, Jack Vorpal (Foon's Greatest Swordsman) has returned to "Hello from the Magic Tavern." Check out Episode 63 of their podcast.  
  Game of Thrones fans: check out IST editor Eric Scull's "Game of Owns" podcast's interview with Hodor actor Kristian Nairn.  
  IST's Julia Weiss helped contribute to Cards Against Humanity's "Donald Trump Bug Out Bag." Read about it from Time Magazine.  
  Congratulations to our friends, Our Fair City, for the successful launch of the seventh season of their podcast!  
  IST's Griffen Eckstein will be performing live at iO Theater, Tuesday nights in June. Event details are at this link. The Improvised Star Trek cast will be joining him... keep an eye on our social media for more details.  
Direct download: ISTBonusPancakeBreakfast.mp3
Category:general -- posted at: 5:57pm CDT