There's no break in the action after the long holiday weekend. A Fat Tuesday Block Party brings a Mardi Gras flavored party to the Fillmore while 'Secret Stash' producer Salva makes a stop at 1015 Folsom for a party with Problem. California Academy of Science hosts a Noise Pop pre-party with a DJ set from Chk Chk Chk and Zap Mama and Antibalas join forces at the Fillmore. Sonny & the Sunsets are back with a record release show and for those missing winter weather, the Polar Plunge offers an opportunity for a big chill on the waterfront. Big laughs are on the way at a tribute for Robin Williams at Cobb's.