ART: It's another installment of Sketch Tuesdays, your monthly golden opportunity to score cheap one-of-a-kind art ($5-30) that's created before your eyes by highly talented Bay Area artists. (7 p.m., 111 Minna Gallery, 111 Minna)

PANEL: The SF Film Society Film Arts Forum presents The Sound of Cinema, featuring Academy Award-winning sound designers offering insight and expertise on creating powerful aural landscapes for cinema through a panel discussion and a Laptop Shop showcasing the participants' work. (7:30 p.m., New People Cinema, 1746 Post Street)

COMEDY: Check out "[t]hree hometown boys (and one female from the suburbs) defending their turf against a strong group of international comedians at the semi-finals of the 36th Annual San Francisco Stand-Up Comedy Competition, which is considered a "[c]areer-making contest," boasting alumni such as Dana Carvey, Louis C.K., Ellen DeGeneres, Patton Oswalt and, Robin Williams. (8 p.m., Jewish Community Center of SF, 3200 California Street)