The Royal Berkshire Improv Troupe a.k.a. RBIT announces upcoming shows. Saturday May 30th at 8 p.m. the troupe will perform at its home base in North Adams at Main Street Stage. Tickets are $7 at the door.Saturday June 13th the troupe will perform in Pittsfield at Dottie's Coffee Lounge. This show will include hors d' oeuvres and will begin at 7 p.m. Call Dottie's for reservations at 413-443-1792. Tickets are $20.RBIT is a comedy improv group that has been delighting audiences with its own brand of non-scripted comedic mayhem since June of 2001. Performing a mix of theater games reminiscent of the TV show Whose Line Is It Anyway?, the group models its work on the teachings of renowned theater games/improvisation instructor Keith Johnstone. Through audience participation, RBIT's mission is to create entertaining scenes which explore the boundaries of theater improvisation.