I've been really looking forward to picking this up, then they decided to release it in a month where I'm already buying a ton of stuff. Definitely will still be getting it, but it will be a little while now.
@ewansuttie: It's my understanding that the game has a ton of little nods to the movie so watching it would help pick those up, which could be fun. As for comparing them, I don't know what to tell you, just don't? The atmosphere and base concept are the same but otherwise I think it should be pretty easy to appreciate each on their own merits. You seem to have this mindset some already so you're probably good.