Chris Evans helped make what was in some ways a boring character a truly awesome hero. This is truly defined by Evans' charisma and optimism, as well as his simple but clear sense of morality, and how despite his desire to good, he isn't afraid to question his orders when necessary
The Iron Man movies showed what a fin and interesting character Tony Stark is, but that mostly due to RDJ's performance, showing both the fun partying side as well as the emotionally vulnerable side as well!
Conroy is the definitive Batman. I love Adam West, Michael Keaton, and even Bruce Greenwood, but nobody quite captures the essence of Batman the way Conroy does, and I'm not even that familiar with the comics.