8th Annual World Naked Bike Ride: It seems like just yesterday (March) that there was one of these, but Saturday's global nude bicycle ride is anticipated to be the biggest one yet.

Sunday Streets Bayview, Dogpatch, Potrero: Sunday Streets spans the southeast side of town on Sunday, featuring a whole slew of entertainment and activities, including a Free Wall interactive mural, breakdance demo and lesson, a yogathon, and an outdoor stage presented by the Bayview Opera House featuring live performances and workshops.

“Grilling in the Mo’” The 4th Annual Fillmore Summer Fest Kick-Off: Saturday's celebration at Hamilton Recreation Center kicks off the start of summer street fair season, featuring a free family BBQ and entertainment by The Silver Fox Blues Band, The Village Kids Chorus, Hamilton Recreation’s line dancers, a live DJ, a raffle, and activities for all ages.

Haight Ashbury Street Fair: As mentioned in SFist's Guide to June's Free Festivals and Street Fairs, Haight Ashbury's big fair happens on Sunday, featuring several stages with live music, including a Red Vic benefit showcasing jug band music, along with a children's alley. (Make sure the little ones stay away from those "counterfeit" candy bars!)

Harmony Festival: Perhaps you're looking to get out of town in search of warmer climes this weekend? Santa Rosa's Harmony Festival is going on as we speak. Headliners include Primus, Flaming Lips, Michael Franti and Spearhead, G. Love and Special Sauce, and Edward Sharpe and the Magnetic Zeros.

SF Mixtape Society: This month's Mixtape Society event, which is also serving as a fundraiser for Save KUSF, is themed Lemonade Stand. The winner of the Judges Choice award will be invited to guest DJ on KUSF, and 100% of the proceeds from the sale of Save KUSF merchandise and guest celebrity mixes will go to Save KUSF. Donations are also encouraged.