Last night's Saturday Night Live featured the 100th digital short so we were treated a short about the shorts that featured a bunch of call backs and cameos. Justin Timberlake, Natalie Portman, Jon Hamm and Michael Bolton were on hand to reprise previous roles and Justin Bieber host Will Ferrell joined in as well.

SNL debuted "I Just Had Sex" on Saturday, the first single from The Lonely Island's forthcoming album. The anthem is a celebration of putting your penis in somebody and features cameos from John McEnroe, Jessica Alba, and Blake Lively!