This has been making the rounds, and it's just funny as all hell... so if you haven't seen it yet...
Jimmy Kimmel and Sarah Silverman have been dating for a while. Kimmel also has a running gag on his show regarding Matt Damon, where he keeps promising that Damon will be a guest that night, and then at the evening, he's "run out of time", so Damon can't be on the show (and Damon has always been very good natured about this).
Well, Silverman made this very sweet music video for Jimmy, and premiered it on his show (Warning: NSFW!)...
Click to view
Seriously, even if you don't think you like Kimmel, Silverman, OR Damon, watch this. It will make your day!