We need a timeline to discuss this. Pre Burton and post Burton.
Pre Burton, you had a reasonable attempt to match superheroes with their comic book depictions. Nic Hammond as Spidey in the 70's wasn't all that muscular, but at the time, Spidey wasn't drawn with too many muscles anyway. Arnold as Conan was prefect casting, Christopher Reeves was physically not really what Superman could have been, but facially he fit the bill so well. And for such an iconic character, you really needed someone the audience would accept without question. With Reeves I think this was the case, so his skinny-ness was easily overlooked. On tv, Captain Marvel wasn't huge huge, but certainly bigger than the average person, and of course Lou Ferrigno was cast for his physique, moreso than his ability to pull faces, I'm sure.
Then came Burton's Batman. Not a bad film (ok, second half was shit, but first half was great) considering all hype. But can you remember the gnashing of teeth at the prospect of Michael Keaton playing Batman? No way, no how could he pull it off. Goddamned scrawny comedian is what he was, not the Dark Knight of Gotham city.
Except he did a good job, and Burton's solution to his physical shortcomings? Just build him the muscles.
Ever since then it seems 'the look' has become a secondary consideration when casting superheroes, with a few exceptions. Robert Downey is the perfect Iron Man, and I think the X Men films tried hard to do the right job, even if they didn't get all the characters right.
Fantastic Four was a casting disaster (Human Torch aside), and I still have nightmares about that retard Mark Steven Johnson who couldn't control himself with Daredevil (and please - Ben Affleck in a padded leather jacket???).
Spiderman I thought was well cast and I have no idea why they're reinventing the franchise so soon. The first Hulk was better than the second for the Hulk himself, but Norton as Banner was much better than Eric Bana. That's one case (the first film) where a complete cgi creation worked well. For all the advances in technology between the first and second movies, the second cgi Hulk was pretty bad I thought. From what I've seen of the trailers, I have very low hopes for Green Lantern, and my jury is still out on Thor and Captain America.
I'd be just as happy if Hollywood put it's superhero money into animation instead. I'd have no problem watching an extended version of that dc game trailer that posted recently, or even good quality anime. No problems at all.
Ok - that's enough or I'll start sounding like the comic book guy on the Simpsons.
Stuntmovie - have you ever worked with Gene Lebell? He's one guy I'd give my brothers left testicle to meet.