6. Butterbean vs. Bart Gunn - Brawl For All - WrestleMania 15
If you thought the Akebono/Big Show match was the shortest celebrity WrestleMania match, you'd be wrong (if you're judging from actual first contact). In 1998, Bart Gunn shocked the world (and especially "Dr. Death" Steve Williams) by winning the Brawl for All tournament. His reward was a boxing match at WrestleMania XV against knockout specialist Butterbean, who then proceeded to knock Gunn on his ass twice in less than a minute, the second one ending the match. The only reason this ranks this high is how bad the other matches are and how highly entertaining that minute-long fight still is. It was too short to be offensive, and Gunn literally became a punchline.