All Atheists Are Muslim: A solo performance by Zahra Noorbakhsh. Thursdays-Saturdays, 8 p.m. Through Oct. 1. $20. Stage Werx Theatre, 533 Sutter (at Powell), 730-3433.
Beach Blanket Babylon:Steve Silver's musical revue spoofs pop culture with extravagant costumes. Wednesdays-Sundays. $25-$130. Club Fugazi, 678 Green(at Powell), 421-4222.
Big City Improv: Actors take audience suggestions and create comedy from nothing. Fridays, 10 p.m. $15-$20. www.bigcityimprov.com. Shelton Theater, 533 Sutter(at Powell), 433-3040.
The Breakfast Fight Club: An original play based on a mashup of The Breakfast Club and Fight Club. Fri., Sept. 30, 8 p.m. $15. Dark Room Theater, 2263 Mission(at 19th St.), 401-7987.
The Business: A Comedy Show: Wednesdays, 8 p.m. $5. Dark Room Theater, 2263 Mission (at 19th St.), 401-7987.
Desdemona: Adaptation based on character in Shakespeare's Othello. Daily. Through Nov. 5. $15-$35. Boxcar Playhouse, 505 Natoma (at 6th St.), 776-1747.
Don't Tell Mom the Weekend's Dead!: Sketch comedy and variety show written, produced, directed, and performed by women. Mondays. Through Oct. 24. $20-$30. Dark Room Theater, 2263 Mission (at 19th St.), 401-7987.
Honey Brown Eyes: A tale of two musicians who fight on opposite sides of the Bosnian war. Tuesdays-Saturdays. Through Nov. 5. $20-$50. SF Playhouse Stage 2,533 Sutter (at Powell), 677-9596.
Maestro's Enchantment: A romance between an illusionist and the leader of an 18th-century circus troupe. Aerial acts, music, and dinner. Thursdays-Sundays. Through Oct. 9. $117-$186. love.zinzanni.org. Teatro ZinZanni, Pier 27, Lombard & Embarcadero, 438-2668.
Monday Night Marsh: Musicians, actors, performance artists, and others stage works in progress. Mondays. $7. The Marsh, 1062 Valencia (at 22nd St.), 826-5750.
Night Over Erzinga: Written by Adriana Sevahn. Sundays, 2 p.m.; Fridays, Saturdays, 8 p.m.; Thursdays, 8:30 p.m. Through Oct. 9. $20-$36. Fort Mason, Southside Theater, Marina (at Buchanan).
Not Getting Any Younger: Solo performance by comedian Marga Gomez. Thursdays-Sundays. Through Oct. 23. $15-$50. The Marsh, 1062 Valencia (at 22nd St.),826-5750.
Once in a Lifetime: A comedy about Hollywood's transition from silent films to "talkies." Tuesdays-Sundays. Through Oct. 16. $9.50-$85. American Conservatory Theater,415 Geary (at Mason), 749-2228.
Why We Have a Body: A lesbian private investigator follows men suspected of cheating on their wives. Tuesdays-Sundays. Through Oct. 2. $20-$60. Magic Theatre, Fort Mason, Bldg. D, Marina & Buchanan, 441-8822.
Your F!#&ed Up Relationship: Improv based on real-life relationship problems supplied by audience members. Fridays. free. Alcove Theater, 414 Mason (at Derby).