Finally, a Marvel movie that comes close to matching 'Iron Man'. It follows the disasters that were 'Thor' and 'Captain America' and the semi-disappointments that were 'The Incredible Hulk' and 'Iron Man 2'.
With such a large number of lead characters I was expecting a total mess, but somehow it all just works. In fact, the characters play off each other so well, that it really surprised me. I personally give credit to Joss Whedon, who write and directed this movie. He's always been exceptional good at writing sci-fi material.