What movie did Michael J Fox pass for teen wolf?

Answer 1

He did not pass any movies for Teen Wolf. He just agreed to do it (even though in his book, Lucky Man, he says while he was filming the movie he was regretting doing it because he thought it would ruin his film career *Teen Wolf was his very first film*)

But I'm pretty sure you're thinking of Back to the Future, because Michael J. Fox had to pass Back to the Future at FIRST, because of his Family Ties schedule. So the makers of Back to the Future hired Eric Stoltz to be Marty McFly. They filmed half the movie, when they decided to fire Eric Stoltz because they just didn't think he fit the role.

So then the producers of Family Ties let Michael J. Fox do the movie.

There's your answer.