The Aliens: Two young men in a New England town meditating on music, philosophy, drugs, and Bukowski find a disciple behind a coffeehouse. Tuesdays-Saturdays. Through May 5. $20-$70. SF Playhouse, 533 Sutter (at Powell), 677-9596.
Audium 9: Spatial electronic orchestrations and sound sculptures. Early arrival is 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.
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.
Blues for an Alabama Sky: A love story set during the Harlem Renaissance in which religion, lies, and sexual orientations collide. Wednesdays-Sundays. Through May 12. $10-$53. Lorraine Hansberry Theatre, 450 Post (at Powell), 474-8800.
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.
Cutting Ball Theater: Hidden Classics Reading Series: Three one-act readings from August Strindberg. "The Stronger," "Pariah" and "Simoon." Sun., May 6, 1 p.m. Free. The Cutting Ball Theater, 277 Taylor (at Ellis), 492-4700.
Down to This: A game of chance decides who lives and who dies in a small mountain town. Tuesdays-Saturdays, 8 p.m. Through May 26. $12-$20. Exit Stage Left, 156 Eddy (at Taylor), 673-3847.
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.
An Evening of Tennessee Williams: Selections from Tennessee Williams' repertoire. 8 p.m. Through May 5. $15.50. American Conservatory Theater, 415 Geary (at Mason), 749-2228.
ForePlays' This American Lie: Sketch comedy written, performed, and produced by the women of PianoFight as well as music and stand-up comedy. Fridays. Through May 4. $15-$25. Stage Werx 446, 446 Valencia (at 16th St.).
FWD: Life Gone Viral: A performance by Charlie Varon and Jeri Lynn Cohen. Previews run through May 10; show opens May 12 and continues through June 10. Thursdays, Saturdays, Sundays. $20-$50. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
Homenaje a Los Flamencos de la Bodega: Performance dedicated to Los Flamencos de la Bodega. Sat., May 5, 7 p.m. $21-$55. Marines' Memorial Theatre, 609 Sutter (at Mason), 673-6672.
Hot Greeks: An ancient Greek tragedy meets a modern-day football comedy meets theater of the absurd in this remake of a play by San Francisco's Cockettes. Thursdays-Saturdays, 8 p.m. Through May 19. $30-$69. The Hypnodrome, 575 10th St. (at Bryant), (800) 838-3006.
How to Get Out of Your Own Way and Book the Job!: Acting seminar led by Tom Todoroff. Thu., May 3, 7 p.m. Free. Playwrights' Center of San Francisco, 588 Sutter St. #430, 820-3206.
Improvised Murder Mystery: BATS Improv creates a story based on audience suggestions. Saturdays. Through May 26. $17-$20. Bayfront Theater, 16 Marina (at Laguna), 474-6776.
Kipling Hotel: Don Reed's solo show. Saturdays, Sundays. Through June 10. $20-$50. The Marsh Berkeley, 2120 Allston (at Shattuck), Berkeley, (510) 704-8291.
Mission CTRL Goes Public: The $7 Billion IPO: Sketch comedy from comedy troupe that's part of the PianoFight theater company. Thursdays. Through May 3. $15-$25. Stage Werx 446, 446 Valencia (at 16th St.).
Monday Night Marsh: Musicians, actors, performance artists, and others stage works in progress. Mondays. $7. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.
The San Francisco International Arts Festival: Festival bringing artists together from all over the world. May 4-20. www.sfiaf.org. Multiple Bay Area locations.
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.
Tenderloin: A piece about the people and places in Cutting Ball Theater's neighborhood. Thursdays-Sundays. Through May 27. $10-$50. The Cutting Ball Theater, 277 Taylor (at Ellis), 492-4700.
Thunderdome: The Monthly Improv Cage-Match: Monthly show contains three improv troupes; the first two compete to see which will be the next headliner. First Wednesday of every month. Through Dec. 5. free. Stage Werx 446, 446 Valencia (at 16th St.).
Tony 'n' Tina's Wedding: Fridays, Saturdays, 7 p.m. $88.50-$115.50. www.tonyandtinasanfrancisco.com. Imperial Palace, 818 Washington (at Grant), 956-9888.
Vote for Chicken: Sketches and improv based on audience suggestions from Chicken Scratch troupe. Starting May 4. Fridays, Saturdays. Through May 12. $10-$15. Exit Theatre, 156 Eddy (at Taylor), 673-3847.
Waiting Period: Solo performance about depression by actor, playwright, author, and talk show host Brian Copeland. Fridays, Saturdays. Through July 7. $20-$50. The Marsh Theater, 1062 Valencia (at 22nd St.), 826-5750.