To celebrate his special week of shows out of Universal Orlando Resort, Jimmy Fallon [1] decided to bring out the big guns for his latest Lip Sync Battle. Shaquille O'Neal stepped up to the challenge, and the pair's face-off might be the most epic competition yet (only Channing Tatum and Beyoncé have them beat [2], honestly). Jimmy kicked things off with "Jump Around," but when Shaq started performing Bobby Brown's "My Prerogative," none other than Pitbull appeared. "That's not fair, that's not fair," the late-night host joked. "I got to up my game." Upping his game apparently meant singing John Legend and Ariana Grande's cover of "Beauty and the Beast" [3] (complete with wardrobe changes), before he and Shaq both joined in on a duet of Elton John's "Don't Go Breaking My Heart." We told you it was epic!