Backstory about Jimmy Kimmel and Matt Damon:

Basically if a talk show runs out of time for a guest they will try to get them on the next show. So Kimmel did this thing where at the end he'd say "Apologises to Matt Damon but we ran out of time" over and over. So one episode he actually got Damon on but at teh end of the show. So Kimmel did a lengthy introduction and when Damon sat down, Kimmel goes "sorry Matt, we ran out of time." Damon jumps up and starts swearing at Kimmel and leaves the show pissed.
So, Sara wrote a song for Jimmy:

http://www.youtube.com/watch?v=wnVJZkDuVBM&eurl

Obviously Jimmy is taken back by this but recently, Jimmy Kimmel made his own video:

http://www.youtube.com/watch?v=rGa29kPBbp4

Enjoy.