X2 (AKA: X2: X-Men United)

IMDB: 7.4/10

When anti-mutant Colonel William Stryker kidnaps Professor X and attacks his school, the X-Men must ally with their archenemy Magneto to stop him.

Happy New Year

IMDB: 5.0/10

A gang of amateur dancers takes part in a dancing competition to avenge their personal vendetta.

X-Men: The Last Stand

IMDB: 6.6/10

The human government develops a cure for mutations, and Jean Grey becomes a darker uncontrollable persona called the Phoenix who allies with Magneto, causing escalation into an all-out battle for the X-Men.

X-Men

IMDB: 7.3/10

In a world where mutants (evolved super-powered humans) exist and are discriminated against, two groups form for an inevitable clash: the supremacist Brotherhood, and the pacifist X-Men.