Here’s a fun way to spend a Saturday: load up on coffee in the morning, and then, mid-afternoon, plunk down $25 and park your keister for nine hours of independent film shorts ranging in length from two to 21 minutes at Film Fest Petaluma. There’s truly too much good stuff on offer here: a film about handcrafted bikes; a man who builds a Viking ship; a woman (Judi Dench) who tries to find love via social networking; a stranded astronaut; a post-apocalyptic marriage; the spoils of an affair; sexual dysfunction, and more. Local filmmakers Jackson Rosenfeld, Max Prickey, Miles Pepper and others join the lineup, too. It all goes down Saturday, May 4, at the Mystic Theatre. 21 Petaluma Blvd. N., Petaluma. Blocks of films at 2:30pm, 7:30pm and 10:30pm. $10—$15 per block; $25 for all. 707.765.2121.