As of today, TDK has entered the Oscar Race according to awardsdaily.com, which I consider one of, if not the best, follower of Oscar buzz. It doesn't mean they necessarily think it will be nominated for all of these awards--it's just that the film is getting buzz in these categories. As it is, there are only two films in 2008 that have gotten serious Oscar buzz (Changeling is the other; apparently Wall*E is not).
Best Picture
Best Director
Best Supporting Actor - Heath Ledger
Best Art Direction
Best Sound Mixing
Interestingly, not included in Best Sound Editing, Best Visual Effects, Best Score, or Best Makeup.
I, personally, would think it will not get a BP or Directing nom unless we either have a slow year or is they start to nominate film like they did in the late 70s and 80s and 1990--putting in at least one Action/Fantasy/Adventure film that was well received and high grossing every few years (Jaws, Star Wars, Raiders, ET, Ghost).
But, tech nods--you better believe it as well as Ledger.
And on the "if they want better ratings" level, they will def nominate Ledger and possibly the film for BP.