Inception is one of those films that you want to go into it knowing as little as possible. My advice is that if you want to see it, avoid watching the trailers before you go, avoid reading any reviews, and avoid message boards revealing spoilers. All you need to know is that it's about dream invasion. The movie does lose a bit of steam towards the end (a flaw also in The Dark Knight) but picks back up quickly for a great, though provoking ending. There haven't been movies this original in a long time. Go see it.