Continuity: During the "Battle Dance", there is a shot that focuses on Adam and a group of dancers. In the lower right corner you see a guy in black with long hair run to join their group. However, in the next shot, that same guy is standing behind Adam's rival, snaps his fingers, and runs to join Adam's group.

Revealing: When Adam jumps from the hay bale in the dance hall and the men catch and flip him, his stunt double is very obvious, his hair is darker than Adam's hair.