THEATER: Tom Bruett and BATS Improv hosts Marriage Equality Plays, an evening of short, original plays benefiting the American Foundation for Equal Rights (AFER), featuring new short plays by William Bivins, Michelle Carter, Garret Jon Groenveld, Lauren Gunderson, Peter Sinn Nachtrieb and Lauren Yee. (8 p.m., BATS Improv's Bayfront Theater, B350 Fort Mason Center)

FILM: Castro Theatre is currently running the Fab Four's classic animated fantasy film, Yellow Submarine, which has been digitally restored in 4K resolution frame by frame, all by hand. Rock out to classics such as "All You Need Is Love," "Lucy In the Sky With Diamonds," "Eleanor Rigby," "When I'm Sixty-Four" and much more, as John, Paul, George and Ringo save the day! (7 and 9 p.m., Castro Theatre, 429 Castro Street)

LITERARY: In his latest book, The (Honest) Truth About Dishonesty, behavioral economist Dan Ariely (Predictably Irrational and The Upside of Irrationality) presents his "unique blend of intellectual curiosity, groundbreaking research, and down-to-earth appeal," to explore why we cheat, what causes our dishonest behavior, and how we can curb and limit it. (7:30 p.m., The Booksmith, 1644 Haight Street)