Paul Rudd has a lot of fans and is pretty mainstream, but I don't think he's ever really had a big defining role. I could be wrong though.
I think that's true. He's been in a LOT of movies (Clueless, Forgetting Sarah Marshall [frelling hilarious in that one], I Love You Man [Again, hilarious], etc.). He's been CRAZY busy for about 20 years now; making 2, 3, and even 4 movies a year. THIS IS going to be a defining role for him and I am SO rooting for him to do well. He's an accomplished actor (though he's generally been in comedic or semi-comedic roles) and it's about time he got a big break. I wish Marvel wasn't so tight with the purse strings, but, still, it's gotta be a good payday for him.
Sincerely,
Team Paul
By the way, for those of you who are Giant-Man fans and want to see Giant-Man make an appearance in at least one of the next two movies, here's a link to some of the old "Tales to Astonish" comic books from the 1960s. I also posted some links on the CA:CW thread. He's also in my Avengers link. In the very early comics, he was always Ant/Giant-Man (and was Pym).
http://www.cloudvistas.com/my-comic-book-collection/photosmarvel-comics/
There's an Avengers and a Tales to Astonish link on the page above.
I don't know what the plan is, but if I were Marvel, I'd wait until a critical moment in CA:CW and have Ant-Man become Giant-Man to turn the tide (yay GM!!). But, please, in spite of what everyone is saying, please let him be on Cap's side.....