You should.
There are so very few good werewolf movies out there. For every one decent werewolf movie on a video store shelf there are a dozen vampire films. We've also noticed that most werewolf movie writers seem think that the idea of a werewolf in our modern society is too far fetched.
This is, in our opinion, a very well done telling of a modern "wolfman" in our modern settings.
Most werewolf/ wolfman films have very little sexual lust and passion to them. While most vampire films are all about sex. And as we all know, sex sells. But Wolf does have a passionate presence that can really appeal to what Sigmund's "oral" and Carl's "shadow" ideas of us.
This movie also strays from the Victorian "repressive" notions that are rampant in older, previous tellings of a wolfman story. In Wolf, ideas are mentioned that run more along the native American ideas of shape-shifting.
James Spader does an excellent villain.
No large, black hat. No dastardly mustache as seen in this example...
http://www.rememberwaybackwhen.com/wp-content/uploads/2009/12/mel-gibson-mustache.jpgA human who cares for nothing more than himself. Who hides like a coward, never confronting, only secretly undermining. Driven only by personal gain and impulse.
And Jack Nicholson plays his parts well. We disagree that he's only playing himself/ the same character that he always play. He starts the movie as a character who is a "comfortably numb", mild aged man, worried about his job and disconnected from his wife that he takes for granted. Only through the slow transformation of his character into a "wolfman" does he show his more "Shinning" side. Possibly dipping into his own dark passenger.