8 p.m. at Bottom Lounge; $15
With a fanbase that's been steadily growing for the past couple years, P.O.S. has been dubbed by many critics as the savior of hip-hop. It's a tremendous title to bestow on a guy whose humble attitude is his most endearing quality, but it isn't totally off-point especially when considering his huge crossover appeal. P.O.S.'s hybrid of punk and rap is stylistically comparable to two trains colliding head-on at 100 MPH, which in this case isn't a bad thing at all. In fact his no-nonsense, aggressive style is exactly what rap needs right now and it's nice to know that Rhymesayers has allowed this guy to grow without restriction. Dessa of Doomtree will open along with Astronautalis.
7:30 p.m. at Viaduct Theatre; $10
The freaks at Wildclaw Theatre didn't find their niche - they dug it. After two years, they're still crouched inside that niche, leaping out only to terrify audiences with great works of horror theater. Their latest play, an adaptation of a sequel to "The Exorcist," pits a cop against a serial killer who may or may not be dead.
Submit your NCAA bracket to a bar.
Whether you're a fan of college basketball or not, there's no better excuse for weekday celebration than March Madness. Before you get too rowdy, make sure the bartender has your picks in hand -- you could win all sorts of prizes this year, including a trip to the Bahamas, a flat-screen TV and a flight on a private jet to see the Cubs play the Cardinals in St. Louis. Get the details and find out about other tourney deals here, and while you're at it, find your school's affiliated Chicago bar.