This guy just doesn't capture the proper Cap look, but I know that these actors never sound right until you actually see them in action so I won't judge. I'm really not optimistic about this movie for anything other than Hugo Weaving, the musical numbers sound just terrible, but this Chris Evans guy could surprise us all.
Another thing, I've noticed some people saying that Cap is supposed to be in his 30's or so, but I'd like to point out that this movie is supposed to be set in WW2 and when Cap first received his powers he was really young, like in his early 20's. It's only in the current Marvel Universe that he's older, since he's always thawed roughly ten years ago. (What with the floating timeline.)
Also please stop suggesting Will Smith, I know some of you are joking and Will Smith is really popular, but as far as I know, Isaiah Bradley (The black Cap who most of you seem to be thinking of.) was only given his powers after Steven Rogers had been subjected to the Super Soldier Serum, the serum had been lost and the government was trying to replicate the process on African-American test subjects. So to sum it up, the original Captain America was Steven Rogers and he was the first successful test subject, Captain African-American was a later subject. Original Cap is Steven Rogers and he is the ironically Aryan, blond haired, blue eyed, Caucasian man fighting against the racist Nazis.
I know I've gone on for a really long time on the whole Will Smith thing, but it really, really annoys me.