1. "The Communication Deterioration"
When Raj (Kunal Nayyar, right) is asked to create a message in case a NASA mission discovers alien life, the guys fight over what he should do, on THE BIG BANG THEORY, Thursday, April 16 (8:00-8:31 PM, ET/PT), on the CBS Television Network. Also pictured: Johnny Galecki (left) Photo: Michael Yarish/Warner Bros. Entertainment Inc. © 2015 WBEI. All rights reserved.