Changed my mind. Someone just sent me this link and it's too good to not post right away.
It's the cast of the Broadway show Avenue Q joining forces with the cast of the recent revival of Fiddler on the Roof, doing a mash-up of the two shows. It took place at the annual Easter Bonnet Competition — a benefit for Broadway Cares/Equity Fights AIDS — in 2004. The script (and more info on the event) can be found over on this page. Pretty funny stuff. Some of the language is not for the young or easily offended.