9th Annual Celebrity Crab Festival: See which San Francisco 49ers and local chefs can crack the most crab on Saturday at Union Square, preceded by a crab-cracking demo. There will also be a wine and beer garden, live music, and family entertainment. (Families are entertaining, aren't they?)
Park Branch Library Grand Reopening: Panhandle residents can rejoice in the reopening of the 101-year-old library, which has been returned to its neo-classical glory with a sensitively green renovation.
The Fourth Annual Amoeba Music Art Show Closing Reception: Noise Pop and Amoeba present a collection of work by over 20 representatives from Amoeba's San Francisco and Berkeley locations on Saturday at Gallery Fifty 24 SF.
A Sensory Feast Workshop #1: SMELL Find out if you're a lush, intellectual, or bonvivant, and make a perfume capturing your essence using edible perfumes with Yosh Han. Presented by 18 Reasons and Kearny Street Workshop.
Godwaffle Noise Pancakes: If you forget your ear plugs at this event, don't worry, they have you covered, and they'll feed you chocolate chip vegan pancakes. Because this things going to be loud. This regular event showcases "savage, transcendent, peri-apocalyptic" performances unlike any other.