As long as I'm not a party, I find arguments amusing. Once, when working at IBM (International Business Machines) [1] I nearly laughed out loud during an argument that took place in a meeting (and got dressed down [2] by my team leader—there's a reason why I don't have a real job).
I also find arguments fun to write—there's just something inherently silly about an argument when two people are arguing past each other. But I never thought to set an argument to Beethoven's Fifth Symphony [3] (link via news from me [4]), much less improvise it live on TV (television).
[3] http://www.youtube.com/watch?v=EEhF-7suDsM&eurl=http%3A%2F%2Fwww%2Enewsfromme%2Ecom%2F
[4] http://www.newsfromme.com/archives/2007_03_23.html#013152