The Most Hilarious SNL Moments

This weekend pop starlet Katy Perry will appear as the musical guest on Saturday Night Live. As is usually the case, Katy will most likely appear in a skit or two while she's on the show, and for that we're extremely excited. Katy's sense of humor definitely shines through her music, and SNL is a greta platform for celebs to show their personality. Who can forget Justin Timberlake's numerous SNL stints, for example? In anticipation of Katy's SNL debut, here are some the funniest and craziest celeb moments on SNL.