Thor

I haven't seen The Avengers yet, but I'm guessing I'll be glad to know a little back story on Thor.  In Thor, we learn that the Nordic gods were actually aliens, and Thor was exiled to Earth by his father.  During his brief time here, he comes to admire humans and to consider us worthy of his protection.

Thor with his traitorous brother.

There's lots of action, of course, but Thor goes beyond the action to inter-planetary political intrigue and an operatic story line.  Thor probably would not win any awards for the acting, but it's still pretty good.

Bottom line, 2 1/2 stars.