Backdoor Comedy Club, the longest-running comedy club in DFW, relocated in mid-July from inside the DoubleTree Hotel in Dallas to a private room inside The Line Bar & Grill, located at 940 E. Belt Line Road, Richardson. The club hosts stand-up comedy showcases Fridays and Saturdays and open mic nights every Thursday. It also offers an introduction to stand-up workshops for those looking to learn the basics of performing and writing stand-up comedy. 214-328-4444.