...Not that "Total Recall" even comes close or anything, but if you remember leaving the theater after Arnold throroughly scrambled your confidence in disinguishing dreams from reality, you'll love taking that ride all over again. And "Inception" delivers the mind-bending goods in spades. It's a tense, compelling story that manages to deliver summer blockbuster-scale action while exploring a much more nuanced conept: the promise and peril of messing around with other people's subconscious mind.
That said, I'm not going to gush uncontrolably like a lot of the reviews I've heard so far (and it's only been ten hours since I caught the midnight screening). The dialogue for at least the first half of the film is rushed, ham-handed, and overly expository, as Nolan spends most of his time explaining the mechanics of dream invasion through the interactions of his characters. But I guess that's to be expected. If the writing was any less patronizing, the premise would fly right over the average moviegoer's head.