Slather on your sunscreen and review your sunstroke-foiling strategies, for today is the kickoff of the 2011 Capitol Hill Block Party. On today's stages: the lovable punks of Yuck, the CYHSY-sized internet buzz band Cults, epic metal workers Fucked Up, benign and divisive local success story the Head and the Heart, and Kenyan-Canadian rapper Shad. Thrills continue through the weekend—see for the full Stranger guide. (Capitol Hill Block Party, Pike St and 12th Ave,, 3 pm-2 am, $27.50 adv/$30 DOS, some stages all ages)