Maybe it was because the rest of the Ashton Kutcher hosted Saturday Night Live sucked, but I thought the SNL Weekend Update appearance by Garth and Kat was the highlight of the night.

Check out the video clip of Fred Armisen and Kristen Wiig as their unprepared Garth and Kat singing Valentine songs. The improv exercise is hilarious and the two of them crack up a fair amount, making it even funnier.