"Divine's Secrets of the Paranormal" Artists' Television Access, 992 Valencia, SF; www.othercinema.com. 8:30pm. $7. Genre archivist Christian Divine unspools a night of psychotronic cinema clips, with topics to include UFOs, Bigfoot, the Loch Ness Monster, and ghosts.
Halloween at the Lex Lexington Club, 3464 19th St., SF; www.lexingtonclub.com. 9pm, free. Nobody knows how to celebrate All Hallow's Eve more than the dykes and queers, honey. Hang out at the Mission's favorite queer bar for rockin' DJs Ms. Jackson and China G., special (g)hosts Ajai and Kat, a costume party at midnight, drink specials, and a whole lotta love.
Invasion of the Body Snatchers Pacific Film Archive, 2575 Bancroft, Berk; bampfa.berkeley.edu. 6:30pm. $5.50–$9. The PFA wraps up its "An Army of Phantoms: American Cinema and the Cold War" with the 1956 commies-are-everywhere classic.
Foreverland's Thriller Halloween Ball Bimbo's, 1025 Columbus, SF; www.bimbos365club.com. 9pm, $22. Premiere 14-piece Michael Jackson tribute act Foreverland plays MJ's spooky exponentially platinum record.
Ghost Ship 2012: Apocalypse on Treasure Island Treasure Island, SF; www.ghostshiphalloween.com. 9pm-4am, $50. Every Burning Man fan worth her salt will be out for this annual mega-blast. With DJs from Space Cowboys, Distrikt, Seismic, Janky Barge, and a zillion other camps.
Halloween at Aquarium of the Bay Pier 39, SF; www.aquariumofthebay.org. 9am-8pm, through October 31. Kids in costume get in free through Halloween — and the whole family will enjoy activities like the "freaky fish scavenger hunt," and underwater pumpkin carving. Adults can indulge in a scary good bad movie, Piranha 3-D, on Halloween night at 6pm. All this, and brainless jellies, too!
Halloween Boooootie DNA Lounge, 375 11th St., SF; www.bootiesf.com. 9pm. $30. A spooky installment of this weekly mashup party night, with A Plus D, Dada, Smash-Up Derby, four rooms of dancing, a midnight costume contest. And probably a boatload of pirates!
Halloween Costume Contest Party at Playland-Not-at-the-Beach 10979 San Pablo, El Cerrito. (510) 592-3002, www.playland-not-at-the-beach.org. 10am-5pm; Sun/28, 10am-5pm, $10-15. Show your scary stuff for prizes at the awesomely fun and wacky-cute amusement park. Check out the creepy Dark Mystery exhibition and the 5000-year-old mummy, too.
Halloween Freakout Monarch, 101 Sixth St., SF; www.monarchsf.com. 10pm-4am, $7–$15. Terroriffic underground house and techno madness from the Honey Sopundsystem and No Way Back crews, for those who like deep tunes as much as daring costumes.
Halloween Massive: Superheros and Villains Westin San Francisco, 50 Third St., SF; So big you won't get over it — like 20,000 square feet big. Expand your Halloween horizons with DJs J Espinoza, J Trip, Johnny Sin and more playing crowd-friendly tunes for a very big crowd.