Just walked by the TV where the kid is watching Sesame Street Old School, Vol. 1, when this awesome pickup handclapping jam session came on. I'd completely forgotten about that.
Anyway, now I want to make it into my ringtone.
It's on the third disc, BTW, Season 5, where it's called "Handclapping Number." The Muppet Wiki Episode Guide, calls the segment "Clap Clap Clap."