I don't watch TV much. No reason, really, other than I got out of the habit about a year ago.
So I was vaguely aware of Sarah Silverman, the comedian, but I didn't know bupkis about Jimmy Kimmel. Well, it seems they are a couple, and Silverman and the actor Matt Damon made a practical-joke video for Kimmel's birthday.
Well, few practical jokes go unreturned. Jimmy Kimmel got Ben Affleck and a host of other celebrities to participate in a riposte. I was particularly taken by Harrison Ford's performance.
The Kimmel-Affleck version is laugh-out-loud funny
I read all about it at Gene Expression.