Wolverine.  What more do I need to say?
 Wolverine returns in X-Men Origins: Wolverine to tell his origin story.  According to the movie, Wolverine was born in colonial America along with his brother Sabertooth.  The two of them have similar powers, and are apparently not affected by time.  The opening credits show the two of them fighting side by side through the Revolutionary War, the World Wars, and Vietnam.  The credits end as Wolverine and Sabertooth are taken in for disorderly conduct, and receive a failed execution.  They are taken into a special military unit that conducts secret government assasinations.  Or something.  It was very unclear, okay?
 The entire unit itself is made up of mutants.  The unit includes Deadpool before he becomes deadpool, a Nightcrawler rip-off who knows kung-fu, and pre-morbidly-obese Blob.  Wolverine goes on murdering more-or-less indescriminately until his morals kick in.
 Then he ditches the group and goes to live a peaceful life.
 Or something.
 Years later, he's a married man.  While he's at work, Sabertooth murders his wife, and Wolverine rejoins the aforementioned secret unit to hunt him down.  Except, well, it's just him.
 The rest of the movie is basically him recruiting old members of the unit to hunt him down.  At the end, Wolverine and Sabertooth join forces to fight against Deadpool for reasons I'm not going to disclose, mostly because, well, you should see it for yourselves.
 All in all, amazing movie.  Almost all action, a good plotline and action that'll keep you on the edge of you seat.  All in all, I give it a 9.5/10.