There have certainly been some clunkers, but in my opinion, here were the bottom 5:
5: WrestleMania 11. This one was headlined by LT, a move that might've made sense for WrestleMania 10 since it took place in New York. This 'Mania featured 7 matches, which makes it the 2nd smallest card in 'Mania history. Only WrestleMania 12 featured fewer matches (6), but I'll give the 1996 event a pass since it featured a 60-man iron man match.
4. WrestleMania 13. The WWE almost went bankrupt around this time so that should tell you just how bad the product was back in early 1997. The defections of Hall and Nash certainly hurt - the injury to HBK didn't make things better. If it wasn't for Hart/Austin putting on one of the top-5 matches in 'Mania history, then this one probably would have landed at #1 on the list.
3. WrestleMania 2. The three arena concept didn't work at all. No arena got more than 35 minutes of action, and it just seemed like a giant waste with no real draw to it. Hell, Chicago had two matches go 2 minutes or less. Seriously, poor Chicago - between WrestleMania 2 and 13, they just dominate this list. In fact, if I expanded the list, WrestleMania 22 would've been ranked 6th.
2. WrestleMania 9. This is was when 'Mania just started to get silly. The toga party was a complete joke - as was half the card. It featured The Undertaker's worst WrestleMania match (Giant Gonzalez) and the dumbest ending in 'Mania history. That the only truly memorable moment of this event was Hogan "challenging" Yokozuna out of the blue should tell you just how bad it was.
1: WrestleMania 8. This one falls to the bottom of the list for a variety of reasons. Outside WrestleMania 1 - which didn't have a WWE Title match - it was the first 'Mania not to have the title match main event the card. People complain these days that the WWE Title doesn't mean as much as it used to ... well look at this event, the biggest event of the year, and the company's top star (Hogan) turned down a chance to wrestle for the title because he had a grudge to settle. Basically, it was Hogan saying there were more important things than being the WWE Champion. That's unacceptable to me.
Add that with the fact that Hogan's actions on Sid at the Rumble were completely unjustified ... that Sid had every right to be pissed at Hogan ... and that the fans were originally on Sid's side (until WWE re-wrote their own history) [youtube]j1RqiVO1-uA[/youtube], and you'll see why most people shit all over this match.
But WM 8 doesn't take my top spot just because of the card that we watched... It took my top spot because of the card it could have - and should have - had.
Hogan/Flair - The dream match
Savage/Roberts - This feud dominated late 1991 and into the early part of 1992. The payoff should've come at WM 8 in my opinion ... instead we got the payoff at a Sat. Main Event. Ugh.
Undertaker/Sid - 'Taker was the top young heel in the company. Sid was the top young face. This had money written all over it in 1992 ... unfortunately, by the time we got the match in 1997, Sid was nowhere near as over with the crowd.