i also liked the Zach Shows Up In Other NBC Shows bit. and, although i usually can't stand Kristen Wiig, i didn't mind her in the bidet sketch, or her as Kathie Lee. I really liked how they used Zach in the Today Show sketch; instead of just throwing him on there as a chef or film critic or something, it was nice to see a reference to the previous skit.
Also, SPOILER ALERT (a term i don't think i ever used when referring to SNL): if you're wondering about the "did he or didn't he" thing at the end, here's a behind the scenes video between the 2nd vampire weekend performance and the last skit:
http://bit.ly/bx5OaJ