Legolas literally walking on air. I wasn't much of a fan before that scene (movie feels too much like one big fight scene with zero exposition or resolution), but that scene had me wanting to throw my hands up and leave the cinema.
Ridiculous how OP he was. Straight Terminator in Smaug and then someone who is able to walk on air in Five Armies.
Dude Legolas was unstoppable in the Rings movies too. I'd argue he was challenged in Smaug and Five Armies a lot more than he was against an entire army in Return of the King.