| Pinkalicious: The Musical (Feb 2012) | Mr. Pinkerton | Dir. Chad Henderson | 2012 |
| What's Love input/output (Feb 2012) | Mike | Dir. George Mirabal | 2012 |
| Alexander and the Terrible... Very Bad Day | Father/Dentist/Shoe Salesman | Dir. Jamie Carr Harrington | 2011 |
| Hotbed Hotel | Brian Cody | Dir. Jamie Carr Harrington | 2011 |
- "Of the performers, David Reed and George Dinsmore are the clear standouts... Dinsmore likewise manages to stay within the realm of funny believability as hotel owner Brian, his almost constant presence serving to anchor the other performers in situations that could have become simply cartoonish." Full review
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| Much Ado About Nothing | Don John | Dir. Linda Khoury | 2012, 2011 |
- "On the evil side, the prolific George Dinsmore makes a good Don John, all the more impressive because he probably had to be at rehearsal for another show or a film shoot immediately after the final curtain." Full review
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| A Midsummer Night's Dream | Theseus | Dir. Linda Khoury | 2011,2010 |
| The Best Christmas Pageant Ever | Father (Bob Bradley) | Dir. Jamie Carr Harrington | 2010,2007 |
| A Sweet Little Murder | Detective John Curtis Buntner | Dir. Pam Godfrey | 2010 |
| Suicide, Anyone? | Bugsie Musso | Dir. George Mirabal | 2010 |
| The 25th Annual Putnam County Spelling Bee | Vice Principal Douglas Panch | Dir. Jocelyn Sanders | 2010 |
- "...aided and abetted by the nerd to end all nerds, one Douglas Panch, vice principal of the school wherein the event takes place. He wears a truly terrible sports jacket and is responsible for many laughs with his deadpan definitions of everything from cow to capybara. He is played by George Dinsmore, a most adept comedian. Henderson and Dinsmore make a fine comic pair." Full review
- "Another huge crowd-pleaser were the examples of words used in sentences, courtesy of George Dinsmore as Assistant Principal Panch; I suspect many of the more outlandish were either improvised, or adapted for the local audience." Full review
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| The Princess Bride | Westley/Dread Pirate Roberts | Dir. Celeste Wszola | 2010 |
| Annie | Rooster | Dir. Celeste Wszola | 2010 |
| Southern Hospitality (Dearly Beloved III) | Deputy John Curtis Buntner | Dir. Glenn Farr | 2010 |
| Buddy: The Buddy Holly Story | Ritchie Valens/Radio DJ | Dir. Shannon Willis Scruggs | 2010, 2009 |
- "Kudos to George Dinsmore for bringing the appropriate energy, commitment and voice to all of his roles." Full review
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| A Midsummer Night's Dream | Egeus | Dir. Sara Blanks | 2010 |
| Christmas Belles (Dearly Beloved II) | Deputy John Curtis Buntner | Dir. Glenn Farrs | 2009 |
| The King and I | The Kralahome | Dir. Jamie Carr Harrington | 2009 |
| Beauty and the Beast | Lumiere | Dir. Shannon Willis Scruggs | 2009 |
- "...the trio of George Dinsmore (Lumiere), Lee O. Smith (Cogwsorth) and Jennifer Morse (Mrs. Potts) are fantastic and layer all their work with smart, thoughtful choices showcasing the depth that the script actually possesses. Dinsmore and Smith work great as a team, with beautiful moments of comedic understatement." Full review
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| Table Manners | Norman Dewars | Dir. Glenn Farr | 2008 |
- "Best of all is George Dinsmore... in a hilarious turn as the most unlikely lothario of all, Ruth's husband Norman." Full review
- "George Dinsmore has the ratty infantilism necessary to cause all the ruckus." Full review
- "At times Norman appears as an idealist trapped in a dull life and deserving of romance, while at others, Norman is downright disrespectful and unlikable. Dinsmore's lead can also be moderately annoying, though he provides a majority of the play's jokes." Full review
- "George Dinsmore as Norman does a stellar job of making a very unordinary character seem believable." Full review
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| Damn Yankees | Sohovik | Dir. Greg "Bougie" Leevy | 2008 |
Dearly Beloved (Voted Best Show 2008) | Deputy John Curtis Buntner | Dir. Glenn Farr | 2008 |
| A Murder Is Announced | Patrick Simmons | Dir. Glenn Farr | 2007 |
| Wizard of Oz | Uncle Henry/Emerald City Guard | Dir. Shannon Willis Scruggs | 2007 |
| Last Chance High | Principal Bronco Ranchwear | Dir. Kimi Barwick Daly | 2007 |
| See How They Run | Vicar Lionel Toop | Dir. Allison McNeelly | 2007 |
| My Fair Lady | Zoltan Karpathy | Dir. Scott Blanks | 2006 |
| Annie Warbucks | Alvin Patterson | Dir. Catherine Allard | 1996 |
| Cheatin' | Clarence Hopkins | Dir. Lori Hancock | 1993 |
| Wizard of Oz | Lord Growley | Dir. Phil Kelley | 1990 |
| Carmen | Corporal Morales | Dir. Phil Kelley | 1989 |
| Flower Drum Song | Sammy Fong | Dir. Diane Case | 1986 |
| The Invisible Man | The Invisible Man | Dir. Michele Molloy | 1986 |
| Dr. Doolittle | Dr. Doolittle | Dir. | 1972 |