#1: Brock Lesnar Vs. Goldberg (WrestleMania 20)
It's hard to pinpoint the right moment that Goldberg and Brock Lesnar should have faced off in their first ever encounter, but we know WrestleMania 20 definitely wasn't it.
After a slow feud that dated all the way back to Survivor Series, the pair were ready to collide in a hotly-anticipated match, until real life got in the way.
As news broke that both Lesnar and Goldberg would be leaving the company after the match, fans booed both men relentlessly, and things weren't helped by both former World Champions giving a woeful performance, not caring at all about the bout.
Not even the presence of 'Stone Cold' Steve Austin could save this match, as though Goldberg and Lesnar were stunned out of WWE by the Rattlesnake, the damage had already been done.
Thankfully, the two would redeem this flop 13 years later at WrestleMania 33. Despite being much older, they would put on an instant classic - a 5-minute chaotic match.