BENEFIT: Green Planet Films presents a benefit screening of Truck Farm!, in which filmmaker Ian Cheney turned the 40 square feet of space in his truck's bed into an urban farm bed. The screening will be followed by a discussion led by David Perkins from Malibu Compost on the importance of growing healthy soil, to grow healthy plants. Space is limited, so get there early!

7 to 10 p.m. // Unwind on Union (1875 Union Street) // $20-45

BLOCK PARTY: Pretend you're in New Orleans at the Fat Tuesday/Mardi Gras Block Party, featuring live music, dancing, entertainment for the kids, food and drink specials, and giveaways from local merchants. Bobbie Webb will kick off the event, followed by a New Orleans' Style Procession Band. Fun for the whole family!

5 p.m. to Midnight // Fillmore Center Plaza (1475 Fillmore Street) // free

SING-ALONG: Warm up those pipes and don your best "under-the-sea" attire for Sing-Along Little Mermaid. The event runs through tomorrow night and is hosted by Laurie Bushman & Leigh Crow, who will help you get your groove on.

7 p.m. // Castro Theatre (429 Castro Street) // $10-15