BENEFIT: Attention Cougars! It's the 7th Annual Firefighter Bachelor Auction tonight! Proceeds will benefit the Allison Ann Ruch Burn Foundation. Ladies who win their bids will go on "very luxurious and memorable dates with their bachelors." There will be live entertainment by '80s cover band Pop Rocks.

7 p.m. // Red Devil Lounge (1695 Polk St) // $20-50

MUSIC: "One of hip-hop's hottest commodities," Mr. Lif, whom we think we spotted at Walgreens the other day, BTW, will expand your mind at Bottom of the Hill with Willie Evans Jr., DJ Centipede, Grieves, and DJ Statik.

10 p.m. // Bottom of the Hill (1233 17th St) // $10/$12 // all ages

FILM: Co-presented by Pirate Cat Radio and Artists' Television Access, Cut and Run weaves its eclectic collection of short 16 mm, video, and archival footage into a visual dialogue about topics that are often cut out or neglected in mainstream U.S. media.

8 p.m. // Artists' Television Access (992 Valencia St) // $6

COMMUNITY: Tonight marks the first event in the monthly Upper Haight Salon (taking place on the last Friday of the month). Step over the hippies and gutter punks as you check out 20+ participating stores and restaurants showcasing local art, discounts, live music, book signings, live burlesque, free appetizers, drink specials, trunk shows, and more.

5 to 9 p.m. // Stores all along Haight St. from Central to Stanyan // free

LIT: Mary Roach, author of bestseller Stiff: The Curious Lives Of Human Cadavers, will be at Books, Inc in Opera Plaza discussing her latest and very titillating work, Bonk: The Curious Coupling Of Science And Sex. The Decider informs us that Roach "investigates the physics of human arousal with the same gusto she brought to the Grim Reaper, cheerily delving into topics such as postmortem erections and the effectiveness of Viagra on pandas."

7 p.m. // Books Inc. (601 Van Ness) // free