Since becoming the first female finalist in the Miller Lite Comedy Search in 1989, Sheryl Underwood’s comedy career has taken off. Underwood’s language is colorful yet not overly vulgar. She covers plenty of racy material, especially relations between men and women. Currently one of the stars on CBS's The Talk, she performs tonight at 7:30 and 10:15 at the Improv and has shows scheduled through the weekend. Tickets are $30. (Rus)