Yeah, I could see the storyline was there and it would have probably been good, just tooo long and I ended up falling asleep.
Its got a lot of comparisons to Forest Gump, but whereas Gump was a long film too, it also kept you watching - always something going on. Benj Button was long AND drawn out ... I reckon they could have quite easily cut a quarter of the film and it still wouldn't have effected the storyline in anyway.
Just my opinion.