Zack Morris is Back

Last night on Jimmy Fallon, Mark Paul Gosselaar went on the show as his famous alter-ego, Zack Morris from Saved By the Bell. This 10 minute clip is amazing -- Gosselaar never breaks character, has a few "time outs" and even winks and raises his eyebrows at the camera. The show concludes with The Roots playing, "Friends Forever." Stay tuned -- Fallon is trying to get the entire cast together for a "reunion" special.