Paul/Awesome

Zoil bursting onto the scene at the end when Paul is signaling for retrieval to have the Big Bad appear instead. He manages to take out both soldier escorts with non-critical leg shots and the pilot in a similar manner. All while being shot at with fully automatic weaponry.
A government agent firing at a fleeing alien in the middle of a town and, out of nowhere, a kid that Paul met about five minutes prior runs up to the man and kicks him in the nuts. Did I mention that the kid takes karate?

Graeme: Who the hell was that?!
Paul: It's Keith Nash!