australia has good improv! XD

Thank God You're Here is based on a simple premise: get a group of well known performers and make each walk through a door into a scene without any idea of who they are or what they're walking into. It might be an operating theatre and a simple greeting, "Thank God you're here, Doctor. The patient's ready." It may be a Roman dungeon, a boardroom, a starship or a talk show. The only things they can depend on are their abilities to make everything up for the next five minutes and cover their tracks as they do it.