Scary movies: Another Hole in the Head Film Festival, a salute to horror and sci-fi cinema, presents “Blood Car,” “El Muerto” and “The Living and the Dead.” [5:15 to 11:30 p.m., Roxie Cinema, 3117 16th St.]

Who’s in town

Judy Norsigian, executive director of Our Bodies Ourselves, gives a lecture on the media’s impact on women’s health. [Noon, UCSF, Mount Zion campus, Herbst Hall, 1600 Divisadero St., second floor; RSVP: (415) 353-2668]

City activities

Night at the opera: The San Francisco Opera presents Mozart’s “Don Giovanni.” Polish baritone Mariusz Kwiecien sings the title role. [8 p.m., War Memorial Opera House, 301 Van Ness Ave.]

‘Gertrude and Alice’: Exhibit celebrates the 100th anniversary of Gertrude Stein meeting Alice B. Toklas and the impact of the pair’s salon on artists and writers. [8 a.m. to 10 p.m., Jewish Community Center, 3200 California St.]

Literary events

Roger Angell: The senior editor of The New Yorker talks about his career in sports writing. [8 p.m., Herbst Theatre, 401 Van Ness Ave.]

Susan Vreeland: The novelist reads from “Luncheon of the Boating Party.” [7 p.m., Alliance Française de San Francisco, 1345 Bush St.]

At the public library

Female composers: The Del Sol String Quartet performs music written and embraced by women. [6 p.m., Main Library, Koret Auditorium, 100 Larkin St.]

Teen henna workshop: Participants learn to create henna tattoos. A parent or guardian signature is required. [3:30 to 5:30 p.m., Portola Branch, 2450 San Bruno Ave.]

At the colleges

Jonathan Crosby: The film producer screens and discusses “Indies Under Fire,” a documentary about the fate of independent bookstores. [7 p.m., New College Creamery, 780 Valencia St.]

Paul Berg: The Stanford University-based Nobel laureate speaks at a symposium titled “The Politicization of Science.” [Noon, UCSF, Health Sciences West Building, Room 301, 513 Parnassus Ave.]