If you want to get the complete Wolverine experience, you may have to see the movie in the theater more than once. X-Men Origins: Wolverine may feature multiple endings that appear following the closing credits. The particular ending you see would depend on which print of the movie is in your given theater.
If you're a fan of the 1985 movie Clue (probably the only movie ever based on a board game), you are sure to experience some déjà vu. Paramount released three prints of that film with different endings, and customers paid for three screenings in order to see each one. Newspaper listings let viewers know which ending would be shown at a particular theater; it's unclear whether the same would happen here.