Just one thing bugged me...

Rating: 8/10 (9 May 2010)

Yeah,there were some plot holes, but who cares... you don't go to this movie to critique the plot.
Anywho, the only thing that left a bad taste in my mouth was the scene at the end when they didn't OK Tony Stark for the Avengers. Are they covering their bases in case they can't afford to pay Downey for the Avengers or what? Iron Man and/or The Avengers will NOT work without Stark/ Downey! His charisma is what made these movies the best Marvel movies ever made.
You can't have the Avengers without Iron Man... you can't have Iron Man without Tony Stark... you can't have Tony Stark without Robert Downey!
I sincerely hope Downey signs on for a prominent role in the Avengers, otherwise it will be severely diminished.
Casting makes a movie. Downey was perfectly cast and adds as much to his character as Halle Berry took away from Storm, Affleck took away from Daredevil, and Ioan Gruffudd took away from Mr. Fantastic.
Not as good as the first, but still the second best Marvel film ever made.