9/17 update: Whoops, not so funny anymore, is it, AIG?
Yeah, I lost count of laughing baby videos on YouTube, to the point that I didn't know AIG had licensed a few of them to use for an ad campaign. Which means I didn't realize, either, that you can get Laughing Baby Ethan ringtones, too. Hilarious.
Laughing Baby Ethan [laughingbabyethan.com]
A Dec. 2007 article on the AIG campaign: Look Who's Laughing [slate]