Michael Buble Brings Christmas Tunes To 'SNL,' Host Jimmy Fallon Returns To Weekend Update For Joke-Off

This weekend's Jimmy Fallon-hosted "Saturday Night Live" was like a big family Christmas get-together, reuniting many of the show's biggest stars for a holiday walk down memory lane. It was a season-best episode to close 2011.

Fallon was not shy about filling the show with the most famous characters from his own "SNL" days, kicking things off with Boston's favorite high school delinquents, Sully and Denise (Rachel Dratch). Fifteen years down the road, we find the pair up to their old tricks, but with a twist – time has actually passed and they are adults with five children (Weezer, Chubsy, Squeezebox, Hags and Baby Richard) trying to sneak into a high school dance. That's about all that's different though, the pair make out like old times ("You are!") and drink Franzia from a bladder sans box. Also back in rotation, Fallon's impressions of Jerry Seinfeld and Barry Gibb, psyching himself up in the mirror ala Mick Jagger (but this time with Andy Samberg) and, of course, the skit everyone is talking about, Fallon's return to the Weekend Update desk opposite Tina Fey in a joke-off with current anchor Seth Meyers and his former co-anchor, Amy Poehler. Watch:

Musical guest Michael Buble proved a good sport too, gamely playing to a cocaine joke during Fallon's warm-and-fuzzy, sing-song monologue and starring in a skit about the making of his (fake) Christmas duets album, which gave the cast (especially Fallon) the chance to lampoon some very famous musicians, including Justin Bieber, Taylor Swift, Kesha, M.I.A., Thom Yorke, Kanye West and Christmas tree-wearing Lady Gaga ("Is that really her?").

Check it out (as well as Buble's performance of "Have A Holly Jolly Christmas") after the jump.