Just saw this as well, more for my uncle than myself (Thor was his favorite hero as a kid) but I loved it enough to now want to explore the old issues myself. Visually stunning and very well written and performed.
Unlike your experience, Clink - the theatre I was in just wasn't loud enough for me. I saw it in 3-D so I guess i was about 98% blown away by the action. Great comic-book flick.
Seeing my uncle pump his fist when Odin mentioned Asgard by name for the first time in the opening voice over was worth the price of admission by itself. He'd been waiting 40 years for this and I was honored to have taken him to see it.