What would Chappelle's Show have been without straitlaced white actors for Dave to act off of? Of course, it's hard for comedians like Bill Burr to stand out when Chappelle gets the biggest laughs in sketches like "The Racial Draft," but when solo, he pulls his weight. Hell, Burr's a pale redhead who impressed crowds at Showtime at the Apollono small feat. See him at the Addison Improv, 4980 Belt Line Road, Thursday through Sunday nights. Tickets are $15. Call 972-404-8501 or visit improvclubs.com.