Episode 17 Photos
Trouble arises when Amy learns Sheldon has applied for a one-way mission to colonize Mars and Leonard surprises Penny with a very "adult" purchase.
On The Late Late Show
Big Bang's Kunal Nayyar and Simon Helberg hit The Late Late Show together and show the audience a good time.
From Big Bang's Sheldon Cooper
Because even geniuses need a little help in the self-esteem department sometimes.