I stopped...no, seriously, I'm even trying to avoid trailers.
About the "too smart" thing, I think you can almost compare this kind of movies to books (not pulp crap like Twilight, but actual sf or for that fact any interesting fiction). In a way that they actually have substance and don't rely on shiny stuff and sex and slapstick comedy.
How can it be bad if you have to watch a movie twice or three times to catch stuff. You'd have it far worse (by this I mean time consumption) if it was a book. Plus, this movie has sepcial effects and, as Bob mentioned, stars, looks etc.
Yeah, sometimes you wish for some simple-blow-shit-up action (like Ironman, Planet terror etc.) but personally, most of the time, these interesting, but still fun, movies are right up my alley.
Will look the review after I've watched the movie...although the movie already sold my seat.
P.S. damn it, do I hate PG13 and other ratings, that stuff ruined a lot of good projects