Famous for his portrayal of Leon, a fast-talking friend of Larry David's on the HBO hit Curb Your Enthusiasm, comedian JB Smoove was born in North Carolina and grew up in New York. He started his career back in 1999, when he moved to Los Angeles and landed a recurring role on MTV's The Lyricist Lounge Show. He also starred opposite Adam Sandler in Mr. Deeds. After a season as a cast member on the sketch comedy program Cedric the Entertainer Presents, he worked as a writer on Saturday Night Live before landing the Curb Your Enthusiasm gig. Smoove returns to the Improv tonight at 7:30 and 10 and tomorrow night at 7 and 9:30. Tickets cost $30. (Niesel)