Metalween: Pre-Halloween bash celebrating heavy metal ditties, featuring Impaled, Kylesa, and Passive/Aggressive. Wed., Oct. 27, 9 p.m., $6. Elbo Room, 647 Valencia (at 18th St.), 552-7788.
Metropolis Halloween Party: DJs Deborah Cox and Tony Moran set the tone for the throngs of buff, hairless queer men at this popular Halloween circuit party. Sat., Oct. 30, 10 p.m., $30-$40, www.guspresents.com.
Midnight Mass: Re-Animator: Midnight screening of cult zombie film at awesome cult movie series. In addition to the movie fun, a sick and beautiful pre-show featuring Peaches Christ (AKA Joshua Granell), Jen Taher, Timmy Spence, and Vinsantos will help you get in the Halloween mood. Sat., Oct. 30, 11:30 p.m., $10, www.peacheschrist.com. Bridge, 3010 Geary, at Blake, 267-4893.
Mischief Nite: Folk-, blues-, and rock-infusion band the Bryan Harrison Band headlines a night of thrills at the Lost and Found Saloon. As always, wear a costume. Sat., Oct. 30, 9:30 p.m., $3.
Monster Ball: DJ Danny Brown spins hip hop and various club hits at this Halloween party, also featuring a costume contest, drink specials, and more. Sat., Oct. 30, 9 p.m., $10. Harry Denton's Rouge, 1500 Broadway, 346-7683, www.sfclubs.com.
Monster Bash: Spend a lovely evening dancing to a live entertainment and walking through Elvira's haunted house. Sat., Oct. 30, 7 p.m., $10-$20. USS Hornet Museum, Pier 3, Alameda Point, Alameda, 510-521-8448.
A Murder Mystery Masquerade Burlesque Ball: Someone is killed and everyone is a suspect, including you. Burlesque troupe Harlem Shake, who will perform, are at the top of the suspects' list, so be careful. Sat., Oct. 30, 8:30 p.m., $10. Eli's Mile High Club & Restaurant, 3629 Martin Luther King Jr. (at 37th St.), Oakland, 510-655-6161.
Mystery Ball Costume Gala to Benefit Headlands Center for the Arts: At the chic ball soprano Marin Lenhardt sings, Orchestra La Moderna Tradición performs Afro-Cuban beats, while DJs Vordo and Alibi spin more modern tunes. Your ticket also gains you entry to an open bar, delicious food, live and silent auctions, and much more. Sat., Oct. 30, 7 p.m.-midnight, www.headlands.org. Headlands Center for the Arts, 944 Fort Barry, Marin Headlands, Sausalito, 331-2787 ext. 28.
Nightmare on Drumm Street: Madonna and Prince covers bands -- Mandonna and Princess, respectively -- throw a downtown Halloween bash. Fri., Oct. 29, 8 p.m.-1 a.m., $20-$30, 675-6230. Hyatt Regency San Francisco, 5 Embarcadero Center, at Sacramento St., 788-1234.
Pixelbiscuit Halloween: Local DJs Canyon, Kirsten, Nate Harrison, Johnny, David, Michael, and Crom spin house-heavy grooves at this free SOMA party. Sat., Oct. 30, 8 p.m.-2 a.m., free. Butter, 354 11th St. (at Folsom), 863-5964, www.smoothasbutter.com.
Pumpkin Carnival: Come test your creative skills at this pumpkin-carving contest. In addition to the crafting fun, there will be a nail-biting costume contest, fun games, and a creepy haunted house to explore. Sat., Oct. 30, 4-8 p.m.; Sun., Oct. 31, 12-4 p.m., $2. Wah Mei School, 1400 Judah, at 19th Ave., 665-4212.
Pumpkin Pandemonium: Come with the kids to carve your pumpkins to artistic perfection at this delightful festival. Sat., Oct. 30, 1-3 p.m., free, 705-5500. Pier 39, Beach & Embarcadero, 705-5500, www.pier39.com.
Revolución: A celebration of the life of Che Guevara? Nope. It's a queer Latin Halloween extravaganza with DJ Alexander, drink specials, barely clothed go-go boys, CD gievaways, and so much more. Come in costume for a discount at the door. Sat., Oct. 30, 9 p.m., $10-$12. Rawhide, 280 Seventh St. (at Folsom), 621-1197.
Rock 'n' Roll Horror Show: They've got film, they've got music. First, glam/indie rock bands Plastination and The Paranoids perform, with metal, punk, rock DJ Bishop spinning in between sets. Second, the apocalyptic zombie musical comedy Gory Gory Hallelujah will be screened for your pleasure. What more do you need, really, in a horror show? Fri., Nov. 5, 8 p.m., $5. Rickshaw Stop, 155 Fell (at Van Ness), 861-2011.
The Saddle Cats: Unplugged Americana rounds out this Halloween night of folks fun. Sun., Oct. 31, 8 p.m., free. Jupiter, 2181 Shattuck (at Center), Berkeley, 510-THE-ROCK.
Septmember, Fire Wrecks the Forest, Champs De Mars perform at Halloween Benefit for www.Votewatch.us: Get one whole dollar off of your admission price if the lady at the door likes your costume. Sat., Oct. 30, 9 p.m., $5. Balazo Gallery, 2811 Mission at 24th St., 550-1108.
Sin Factory Halloween: Famous porn stars judge your Halloween outfit -- which seems odd considering they wear next to nothing on the job -- for a big cash prize. Woo hoo! Sat., Oct. 30, 10 p.m., $10. The Factory, 525 Harrison (at First St.), 339-8686.
Sol y Luna Resurrection: Normally a jazz venue, Club Jazz Nouveau turns to DJ Amir and his beats for a festive Halloween party. Sat., Oct. 30, 11 p.m.-2 a.m., $20. Club Jazz Nouveau, 2801 Leavenworth (at Beach), 921-2100.
Splash: Former Culture Club frontman and current DJ/pop icon Boy George performs for the masses as Ruby Skye transforms itself into an underwater fantasy for a stunning pre-Halloween celebration. Sat., Oct. 30, 8 p.m., $30. Ruby Skye, 420 Mason (at Geary), 693-0777.
Symphony Parnassus -- Haunted Halloween Concert: Symphony Parnassus performs Franz Waxman's Bride of Frankenstein suite, Bernard Herrmann's prelude to Psycho, and Hector Berlioz's "Symphonie Fantastique," and more. Sat., Oct. 30, 3 p.m., $15-$22. Herbst Theatre, 401 Van Ness (at Grove), 392-4400.
Taos Hum & Hair Supply: Guns N' Roses and Air Supply cover bands, respectively, perform on Halloween Night dressed up like the rock stars of yesteryear. Why not dress up as your favorite aging rock idol, too? Sun., Oct. 31, 8 p.m., $8-$10. Red Devil Lounge, 1695 Polk (at Clay), 921-1695, www.reddevillounge.com.