Thor was quite watchable. Saw it at the cinema. (the 3D was a waste of time though). Good lead in to the Avengers movie, keep watching after the credits.
I do hate the way political correctness spills into films though, where they completely re-write characters. Norse Gods who are black (though whatisface that plays Luther is quite good as Heimdall) or Asian, Hogun the Grimm is of East Asian origin. Then there's the whole Nick Fury thing. Yes they've taken it from the Ultimates version of Marvel's comics, but when you've grown up reading Sgt Fury and His Howling Commandos, only for the white one eyed Sgt who later went on to become Colonel Fury and then Director of S.H.I.E.L.D, to see him with an intense sun tan is just wrong. That said, I'd rather see Samuel L Jackson playing Fury than David Hasselhoff (if you've ever seen the original Nick Fury film, you'll know what I mean).
The Kingpin in the Daredevil film went from being a big white guy to a big black guy, thiugh in fairness Michael Clarke Duncan was probably the only person the right size to play the part.
To an extent I can understand it because when a lot of these early Marvel characters were about in the early 60's and 70's, comics didn't have a lot of black characters (the same as TV didn't have a lot of black lead characters). Marvel actually broke a lot of ground by introducing lead black characters and even the first gay superhero, but I'm a traditionalist and would prefer to see characters kept as they were originally designed. There are plenty of black characters who can be used now, without altering things to be PC.
I think it's just as insulting to suddenly make characters black because otherwise there wouldn't be any representation of other races in a comic or film.