A regular on the Chappelle’s Show, comedian Charlie Murphy used to helm a segment called “Charlie Murphy’s True Hollywood Stories,” during which he would portray celebrities. In one funny skit, he pretended to be Prince; in another he portrayed Rick James. The older brother of Eddie Murphy, Charlie Murphy is particularly good at taking on a variety of personas, something he chronicles in his book The Making of a Stand-up Guy. His comedy touches on contemporary events and he especially enjoys making fun of celebrities. He performs tonight at 7:30 and 10 p.m. at the Improv, where he has shows scheduled through Sunday. Tickets are $30. (Niesel)