Comedy: Brian Posehn at the Improv

Brian Posehn has become one of the most unmistakable comedians and character actors going. His large, nerdy presence belies a bitter wit that’s made him a stalwart favorite of the alt-comedy set, and he’ll display that biting observational talent in a small show at the Improv. The Improv, 8261 Melrose Ave., L.A. 8 and 10 p.m. Sat. $20. improv.com.