MUSIC—Sure, I like to get in a couple fancy dinners on my birthday, but the Crystal Ballroom is really taking it to the next level of milking it. The venue celebrates 100 years of existence, and their 100-day-long party ends tonight with a solo show by the Decemberists' Colin Meloy. He's a man who knows a thing or two about history. CF
w/John Roderick; Crystal Ballroom, 1332 W Burnside, 8 pm, $30, all ages

SCIENCE PUB—Tonight's OMSI Science Pub is called "Blows to the Head," and tackles all matter of important cranial questions—from the frightening effects of a concussion to innovative brain cancer treatments. Unclear: if the august guest experts will reveal just how quickly you're killing your brain with all that beer. DVH
Mission Theater, 1624 NW Glisan, 7 pm, $5