After Hulk Hogan gets up from his interview, we see that the chair he's been sitting on is his set chair from when he played Boomer in Division Street (2001).
During the band sketch Sami Zayn jokes needing more cowbell. It is a reference to the famous sketch that aired on Saturday Night Live on April 8, 2000 hosted by Christopher Walkin/Christina Aguilera. Ironically the episode of SNL that aired before that one was a WWF themed episode hosted by The Rock/AC/DC on March 18, 2000. The Big Show, Mick Foley Triple H and Vince McMahon were guests in that episode as well and it was to promote Wrestlemania 2000.