Arthur in Underland: Performed by Dandelion Dancetheater. Fridays-Sundays, 8 p.m. Through March 18. $13-$24. CounterPULSE, 1310 Mission (at Ninth St.), 626-2060.
Audium 9: Spatial electronic orchestrations and sound sculptures. Early arrival advised. Fridays, Saturdays, 8:30 p.m. $20. Audium-Theatre of Sound-Sculptured Space, 1616 Bush (at Franklin), 771-1616.
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.
Becky Shaw: A couple on a blind date is set up by a married couple in this comedy thriller. Tuesdays-Saturdays. Through March 10. $20-$70. SF Playhouse Stage 2, 533 Sutter (at Powell), 677-9596.
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.
A Bright Room Called Day: A play by Tony Kushner about a woman who protects her circle of creative and activist friends from the Nazis' rise to power in 1930s Berlin. Through April 1. $20-$32. Gough Street Playhouse, 1620 Gough (at Bush).
The Business: A Comedy Show: Sketch and stand-up comedy. Wednesdays, 8 p.m. $5. Dark Room Theater, 2263 Mission (at 18th St.), 401-7987.
Will Durst's Elect to Laugh: A comedy sketch chasing down the presidential election cycle. Tuesdays. $15-$35. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
Geezer: Geoff Hoyle's solo performance on getting older. Thursdays, Saturdays, Sundays. Through March 18. $25-$35. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
Improvised Shakespeare: Audiences chooses the title of every performance. Improv actors then create a completely original story in the style and language of the Bard. Saturdays, 8 p.m. Through March 24. $17-$20. Bayfront Theater, 16 Marina (at Laguna), 474-6776.
Julius Caesar: African-American Shakespeare Company's adaptation shows the modern-day relevance of the play about politics, polarity, and violence. Saturdays, Sundays. Through April 1. $10-$35. Buriel Clay Theater, 762 Fulton (at Webster), 762-2071.
Kipling Hotel: Don Reed's solo show. Saturdays, Sundays. Through March 25. $20-$50. The Marsh Berkeley, 2120 Allston (at Shattuck), Berkeley, (510) 704-8291.
A Lie of the Mind: A family drama by Sam Shepard. Through April 14. $15-$35. Boxcar Playhouse, 505 Natoma (at Sixth St.), 776-1747.
Maurice: An aristocratic Englishman declares his love for a male friend during a time when homsexuality is outlawed in Britain. Wednesdays-Sundays. Through March 25. $25-$45. New Conservatory Theatre Center, 25 Van Ness (at Market), 861-8972.
Merchants: No Nude Men Productions' story of two sisters caught in various quagmires while pursuing financial stability and career satisfaction. Thursdays-Saturdays. Through March 24. $5-$20. Exit Stage Left, 156 Eddy (at Taylor), 673-3847.
Monday Night Marsh: Musicians, actors, performance artists, and others take the stage at this regular staging of works in progress. Mondays. $7. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
The Pirates of Penzance Singalong: Gilbert and Sullivan's classic. March 11, 2 p.m. $15-$30. USF Presentation Theater, 2350 Turk (at Masonic), 422-2434.
The Real Americans: Dan Hoyle's one-man show. Fridays-Sundays. Through March 18. $25-$50. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
Scorched: Family drama involving Middle Eastern sojourn to find a lost brother and father. Tuesdays-Sundays. Through March 11. $9.50-$85. American Conservatory Theater, 415 Geary (at Mason), 749-2228.
Secret Improv Society: Underground improvisational theater. Saturdays, 10 p.m. $15. Shelton Theater, 533 Sutter (at Powell), 433-3040.
Shopping! The Musical: Songs and sketches about shopping. Fridays, Saturdays, 8 p.m. $23-$29. www.shoppingthemusical.com. Shelton Theater, 533 Sutter (at Powell), 433-3040.
Some Thing: Art drag night with craft table. Fridays. $5. The Stud, 399 Ninth St. (at Harrison), 863-6623.
The Whole Magillah 2: Uncut: Sketch comedy show. Wednesdays-Saturdays. Through March 10. $15-$20. 292-1233. www.jccsf.org. The Jewish Theatre, 470 Florida (at Mariposa), 292-1233.
Theatresports: Featuring BATS Improv team. Fridays, 8 p.m. Through March 23. $17-$20. Bayfront Theater, 16 Marina (at Laguna), 474-6776.
Thunderdome: The Monthly Improv Cage-Match: Monthly show contains three improv troupes; the first two compete to see which will be the headliner the following month. First Wednesday of every month. Through Dec. 5. free. Stage Werx 446, 446 Valencia (at 16th St.).
Tontlawald: A performance mixing theater, dance, and choral music based on an Estonia fairy tale. Thursdays-Sundays. Through March 11. $10-$50. Exit Theatre, 156 Eddy (at Taylor), 673-3847.
Tony 'n' Tina's Wedding: Saturdays, 7 p.m.; Fridays, 7 p.m. $88.50-$115.50. www.tonyandtinasanfrancisco.com. Imperial Palace, 818 Washington (at Grant), 956-9888.
True West: First in a series of repertory plays by Sam Shepard. Saturdays. Through April 7. $15-$35. Boxcar Theatre Studios, 125A Hyde (at Golden Gate).
Waiting Period: Solo performance about depression by actor, playwright, author and talk show host Brian Copeland. Fridays, Saturdays. Through March 24. $20-$50. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
Your F!#&ed Up Relationship: Improv troupe does show based on audience members' real relationship scenarios. Fridays, 10:30 p.m. free. Alcove Theater, 414 Mason (at Geary).