Even though I hadn't seen all of the previous single-hero movies (Iron Man and Captain America being the 2 I'd seen), it wasn't difficult to jump into this flick. The action was fast and furious, with enough comic relief interspersed to give me a chance to let the heart rate stabilize before picking back up again. RDJ was fabulous as always. The interplay between Iron Man and Captain America was fun to watch. My family quoted favorite lines almost all the way home. Can't wait to get this one on DVD.