Saturday Happenings

Plants

-- Urban gardens are revealed on the Somerville Garden Tour, a self-guided tour to over 40 public and private gardens in the Somerville area. Get ideas for your own garden or just appreciate the greenery. Noon-5pm. $12 tickets / tour booklets will be available at 259 Lowell Street, Somerville, or opposite the Davis Square T Station. (KS)

Geek Charity

-- The Coolidge Corner Theatre hosts Can't Stop The Serenity 2008, raising money for Equality Now, collecting canned food for the Greater Boston Food Bank, and showing the feature-length epilogue to Joss Whedon's martyred scifi series Firefly. (Chiwetel Ejiofor is awesome.) 290 Harvard St., Brookline, midnight. $10 advance, $12 at the door. (CF)

Rock Music

-- Harvey Milk, an Athens, GA, band named after the slain city supervisor of San Francisco, can justly be called overlooked. The band only released a handful of recordings -- none of which this Bostonist has even heard -- and toured to tepid crowds. Nonetheless, they hold a special place in the hearts of those who prefer their rock to be sludgier and heavier than molasses. Great Scott, 1222 Comm. Ave., Allston, 9:00. $12.

Marathons

-- The Summer Institute for Contemporary Performance Practice ("sick puppy") presents its annual six-hour-long finale of new music. Featuring new compositions and old, the roster of composers includes George Crumb, Frederic Rzewski, Toru Takemitsu, Louis Andriessen, Giancinto Scelsi, Luciano Berio, and Jo Kondo. Brown Hall, 30 Gainsborough St., 4:00pm-10:00pm. Free.

Movies

-- Lina Wertmüller had an international hit with Seven Beauties (1975), a dark satire about revenge, prostitution, survival, and the Holocaust. It's not for the faint of heart, but it is a movie that candidly addresses the fraught human condition and the immutable reality of evil and violence. Harvard Film Archive, 24 Quincy St., Cambridge, 7:00pm. $8/$6.

C. Fernsebner and Kerry Skemp contributed to this post.