I love Sheldon Cooper. lol This is one of my favorite episodes, just for the look on Sheldon's face?
Bruce Wayne FTW
Hahaha:) Bruce Wayne (Batman), Tony Stark (Ironman), and Captain America.
The Catherine Tate & David Tennant sketch from Comic Relief Tennant plays substitute teacher Mr. Logan, who goes head to head with Tate’s 'Lauren Cooper'. Absolutely hilarious, this one never gets old! (from Geek Chic ~JB pop-Eggs)