Season 5 Episode 21 episode 21

The Big Bang Theory Season 5 Episode 21 “The Hawking Excitation” Sneak Peek

The Big Bang Theory Season 5 Episode 21 “The Hawking Excitation” Sneak Peek

Here is a sneak peek for The Big Bang Theory, season 5 episode 21 “The Hawking Excitation”, that will air this Thursday, April 5th.