8) X-Men: Days Of Future Past
Sure, Fassbender brings the same character with him to Days of Future Past over from X-Men: First Class, but there are a couple of reasons why he trumps his First Class performance in the sequel.
For one, you have Fassbender grown into the role in DOFP, seemingly more comfortable working within blockbuster constraints than he was in First Class. Second, and more important, is this: DOFP is the film that best displays Fassbender’s unsung talents as a mimic.
Whereas Fassbender in First Class puts his own (inconsistently-accented) spin on Erik Lensherr, in DOFP he’s forced to recognize that the character will eventually grow into Ian McKellen’s interpretation.
So, in DOFP, you have Fassbender doing his glowering, quietly menacing thing, whilst ever-so-subtly adopting McKellen’s accent and mannerisms, convincing as a younger version of the man despite the obvious vast physical dissimilarity between the two.