I'm going to go back to 1998's No Way Out. The main event -- Stone Cold, Cactus Jack, Owen Hart and Chainsaw Charlie versus HHH, the New Age Outlaws, and a mystery partner, replacing the injured Shawn Michaels. The mystery partner? Savio Vega.
Ten years later and I'm still a little irritated about this.
I really think that this can hurt a wrestler. Take Cena for example, his matches aren't really good. But fans cheer when he does his five knuckle shuffle deal. So when he is looking for pops during a match, he goes to that.