I saw "The Avengers" today. As demonstrated by this blog post (which has gotten a TON of hits the past couple of weeks), I am the world's foremost self-declared authority on The Avengers circa 1963-1985. My opinion should carry great weight with you. And that opinion is...I loved it unreservedly.
The film answered every concern and fulfilled every hope I expressed in that post. Great balance of character development, action, pathos, humor. Every character had a chance to shine. I literally can't think of a single thing I'd've done differently. I'm calling it now: best superhero film ever. That may sound like damning with faint praise, but it's truly the best time I've had at the movies in forever.