We could've gone with a YouTube clip of the video for Love Is A Battlefield (totally one of the best videos ever), but we went instead for the Benatards doing "Hit Me With Your Best Shot" at the Eagle Tavern -- that's right, Pat Benatar's playing a show tonight! If you can get up to the Marin County Fair in San Rafael, Ms. Benatar and her husband Neil Girardo will be performing hits like "Heartbreaker," "Invincible," and "We Belong," among many others starting at 7:30 tonight. Concert is free with fair admission ($13), at 10 Avenue of the Flags.

Other events:

--Are you a roller derby-er? The American Roller Skating Derby is having free tryouts tonight at 7:30 at the Cow Palace. Anyone 18 or up can try out, but you must sign a release before you're allowed onto the rink.

--If roller derby sounds a little too dangerous for your tastes, the Commonwealth Club is sponsoring a free book club discussion tonight of Slaughterhouse Five. 5:30 p.m., 595 Market 2nd Floor (x 2nd).

--Man, Mondays are hard. There's a documentary about a monastery at the Red Vic, Brand Upon The Brain at the Li'l Roxie, and if you're going mainstream, watch Ratatouille at the Balboa.