"Extra" host Mario Lopez recently put on a mullet wig, changed into his old wardrobe, and busted out some dance moves on "The Tonight Show with Jimmy Fallon" as he reprised his role as A.C. Slater in a "Saved by the Bell" reunion sketch.

Our cameras were behind-the-scenes with Mario as he headed to "The Tonight Show," turned back the clock, and transformed into A.C. Slater once again!


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