"The Russian Rocket Reaction" is the fifth episode of the fifth season of The Big Bang Theory and the 92nd episode overall. It first aired on CBS on October 13, 2011.The episode features guest appearances by recurring character Wil Wheaton and Star Trek: The Next Generation actor Brent Spiner. In the subplot, Wil Wheaton invites Leonard (Johnny Galecki) and Sheldon (Jim Parsons) to a party that Brent Spiner attends.