The referees that Ken Shamrock took out after his match were not real referees, but rather, local independent wrestlers in referee outfits. After SummerSlam 1997 (in which Shamrock did the same thing), it was decided not to put the real referees in danger like that again.
WrestleMania XIV was the first WWF show where The Rock said his now famous catchphrase "Smell what the Rock is cooking'?" during an interview with Gennifer Flowers. He looked at Gennifer and said "If you smell what I'm cooking" It would morph into his famous catch phrase from there.
This event is recognized by wrestling fans to be the start of the "Attitude Era", when WWE programming became edgier and more controversial in an attempt to compete with WCW. The era would last until WrestleMania X-Seven.
Luna Vachon reportedly had a hard time when she trained with Rena Mero (Sable) for their match; Mero refused to learn how to take bumps and Vachon was told by WWF management that hurting Mero in the ring would put her job in jeopardy.
The D-X Band's screeching renditions of "America the Beautiful" and the American National Anthem were met with a resounding chorus of boos from the crowd in attendance, and the performances were considered disrespectful by fans and even the national media. Lead singer Chris Warren later admitted that he was instructed to perform the songs that way by the WWE, as a means to generate further heat for the D-Generation X stable.