COMEDY: There are still tickets available for SF Sketchfest's opening night presentation of RiffTrax Presents Night of the Shorts III: The Search for Schlock, featuring hosts Kevin Murphy and Bill Corbett and guest riffers David Cross, Bruce McCulloch, Paul F. Tompkins, Cole Stratton, Janet Varney. (8 p.m., Castro Theatre, 429 Castro Street)

MUSIC: The U.K.'s Katy B, a schoolmate of Adele who's described as "a tour guide for London nightlife" and whose sound ranges from "bubblegum dubstep" to "brisk UK funky" and "jazzy soul", hits the Rickshaw tonight, with guests the U.K.'s The Good Natured. (9 p.m., Rickshaw Stop, 155 Fell Street)

FILM: SFMOMA presents Luminaries: SECA Film Awards, which centers on constructing autobiography and features films from SFMOMA's SECA Film As Art Awards program (1973-98), which recognized innovative and challenging new works by experimental filmmakers in Northern California. (7 p.m., SFMOMA, 151 Third Street)