Emmy Award-nominated series “Last Comic Standing” returns to NBC starring three new celebrity judges, Roseanne Barr, Keenen Ivory Wayans and Russell Peters with host JB Smoove. Witness the head-to-head comedy competition at the Hollywood Improv Thursday, Apr. 17 and Friday, Apr. 25 at 8 p.m. as they search for the country’s funniest comic. Tickets, $10, available online.