
Eh, I don't know if you really need to catch up on Iron Man 2, but it is decent, if a let-down, especially compared to the first one. It was on Netflix when I had it, but that was long ago.
I'm really excited for Into Darkness and Man of Steel as well. Honestly, I think I'm equally excited for all three movies. The nerd stuff released in summer has just been high quality the last few years, so that's what I tend to get excited for.