#1 The Viper gets RKO'd out of nowhere

There's something special about the RKO. Though the move itself is nothing new, with DDP using the Diamond Cutter in WCW, and Joh Laurianits using the Ace Crusher before that, Randy Orton's finisher has become just as well-known out of wrestling, thanks in part to the infamous RKO out of nowhere meme.
Though Orton's character has changed a lot over the years, the RKO has remained the same, though the move came back to haunt the Viper at Extreme Rules 2015. As part of a stipulation for the match, Orton was banned from using his own finisher, though WWE Champion Seth Rollins wouldn't be receiving any help from the Authority, as the pair were locked in a Steel Cage.
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While everything looked in favor of Randy Orton to win the WWE Championship from Rollins, the Architect nailed Orton with an RKO out of nowhere, as the commentary team made it clear that though Orton was banned from using the move, Rollins wasn't. That was enough to keep Orton down until Rollins could escape the cage to win the match.