I saw the trailers to Batman Begins and The Fantastic Four again at the cinema last night.
I'm somewhat underwhelmed by The Fantastic Four. It looks very derivative and will probably be slightly dull.
Batman Begins looks a lot better, but may just be darkly lit with lots of fights.
The problem is that neither of these comic franchises really mean much to me. Growing up in England the Marvel and DC comics always seemed expensive and hard to find (and had those weird American adverts for Sea Monkeys). Instead I grew up reading 2000AD and Judge Dredd. Of course Hollywood have already made the worst possible film of Judge Dredd that anyone could have imagined (why did Stallone need to make up a stupid catchphrase?). If that movie is your only exposure, please, please read some of the comics. They are indescribably better.