Charlotte's rapidly fading comedy scene gets a boost from a new improv comedy troupe, The Chuckleheads. As an icebreaker, the group unleashes their 1st Annual Christmas, Hanukkah, Kwanzaa, Festivas Improv Comedy Spectacular 2007. Seasoned improv vets, å la Scott, Ryan, Jenny, Joel, Lisa, Charla and Paul, will use audience participation to give you a show to rival Whose Line Is It Anyway. Keeping it competitive and light all night long. 8 p.m. $5. The Perk, 1427 South Blvd., Suite 103. www.thechuckleheads.com.