What the world needs now is a hunky Asgardian beating the crap out of people with a hammer.
Ok, actually this is what Superhero films and the superhero genre need. After seeing the previews for the Thor movie, I'm not only enthused about it, I think the film has the chance to get Superhero movies out of a rut.
There have been many Superhero films over the last few decades. Many have been quite good and artistic, often with excellent actors. Chistopher Reeve's Superman was excellent (and a fun film). Nolan's Batman was dark and noirish and well-done. The Rami Spiderman films were pretty good (early on at least) and had excellent casting – I'd in fact say Alfred Molina's Doctor Octopus was amazing. There's a lot of good stuff out there.
It's just it always seems to be the same stuff, over and over.