X-Men: Evolution (2000)

Day Of Reckoning (2) - S2-E17

Revealing mistake: When Wanda traps Magneto in the force field thing, for one shot, Magneto is missing a sleeve on one arm, then it comes back a shot later.

Col. Nick Fury: I can't let her go.
Wolverine: You can... and you will.

Retreat - S2-E12

Trivia: When one of the Bigfoot hunters talks about his whistle, he says to go to the Bigfoot shop and ask for Mulder. Mulder is the Agent from The X-Files (X-Files music plays in the background when he says this).

Piemanmoo