LITERARY: There are a just a handful of tickets left to see the delightfully and uproariously trashy John Waters at JCCSF tonight (we hope that bomb threat doesn't mess things up!), who will be talking about his new book, Role Models, which details "shopping for secondhand clothes at Hadassah with the drag queen Divine, and explains the connection between his own iconic mustache and Che Guevara’s beret."

7:30 p.m. // Jewish Community Center of San Francisco (3200 California Street) // $10-30

FILM: Head over to Cafe Royale for a good laugh tonight as Mel Brooks' ultimate Western spoof, Blazing Saddles, graces the big screen, "starring Cleavon Little, Gene Wilder, Slim Pickens, Harvey Korman, Madeline Kahn, and a cast of thousands." [Via FunCheapSF]

9 p.m. // Cafe Royale (800 Post Street) // free

SCIENCE: Australian biologist Tim Flannery will discuss his latest book, Here on Earth: A New Beginning, which explains how humans can more harmoniously balance our relationship with the Earth by looking at the evolutionary perspective of Alfred Russell Wallace, who he feels offers better guidance than the more familiar Darwinian version of evolution.

7 p.m. // Marines Memorial Theatre (609 Sutter Street) // $10 (advance tickets recommended)