well, there's two genres here--filming your kids having fun genre, which is cute, and lame attempts at making fun of sesame street, which is just annoying. i'm with vic here--it's clogging my youtube search finds and i have yet to see one that amuses me. this is not just an american phenomenon, and wastes even more of my time when i'm searching for international ss in languages i don't speak...
the thing that IS funny, in a sad way, is that people think they're making fun of sesame street with these videos, but they're actually not. especially hilarious is that people put avenue q music to pictures of sesame street characters and giggle over ss making adult jokes. they don't seem to realize that it's not their brilliant idea that some of the characters match up--they were intended to...and it's not their idea that puppets making jokes can be funny to grown-ups--that was the point of avenue q. and the muppets. and much of sesame street. which means they totally missed the point.
i'm not even sure how you would make a good parody of ss, a show based so much on parody itself. the only funny stuff i've seen actually uses ss as a vehicle to make fun of other things. that's how i always took the daily show's Gitmo, and this video of different words to piyn[/URL]. and the ss muppets when they get off the street--like cookie on colbert saying he can't remember the 70s, or the scrubs promo where elmo dwells on his popularity and synonimity with ss and when the guy curses elmo says he learned a new word. the joke is on torture, sex, drugs, materialism and foul language, not on sesame street. and with all those lame attempts at making fun of ss, it's always painfully obvious that the joke is on the people who made the dumb videos.