First off, I dont think Ackles should play Captain America cause he has little film experience and I don't think Marvel would cast him. He even has said that nobody from Marvel has contacted him for the role. So here is my pick for Cap, Buck and Red Skull. I also have some second choices for Cap, and Red Skull.
I think Matt Damon is good choice for Cap. He has the acting skills to pull it off. This was certainly his best year as an actor having been in The Informant! and Invictus in which He was in great shape and having earned two Golden Globe nominations for both films. Theres just this thing about his age and height but I think that if Marvel chooses him they will do something to make him look younger (just how they did to Hugh Jackman in X-Men Origins: Wolverine) and they will also do something to make him look bigger and with that you get the perfect Steve Rogers.
Anton Yelchin IS Bucky. One day while reading that Bucky would definitely be in TFACA all of a sudden Yelchin came to my mind and I was like "That guy IS Bucky". Just like Damon, Anton had a great year, having been in two blockbusters that are Star Trek and Terminator Salvation. He was the perfect fit for both Pavel Chekov and Kyle Reese. Another thing that tells me that He IS Bucky is that He is Russian and that can help if Marvel Studios decide to bring back Bucky as Winter Soldier.
Christoph Waltz is another actor that had a magnificent year with his critically acclaim performance in Inglourious Basterds. He probably doesn't want to be typecast as a Nazi but I would love to see him as Red Skull. If He doesn't want to be a Nazi again, I got a second choice for Red Skull.
And now here is my second choice actors for Cap and Red Skull.
Jeremy Renner has had a great year with his performance in The Hurt Locker. He has been in talks for Hawkeye but I rather see Sam Worthington as Hawkeye. If Damon doesn't get it I really hope Renner does.
Ralph Fiennes is my second choice for Red Skull cause look at him as Voldemort....oh pardon me...He-Who-Must-Not-Be-Named... Just paint him Red and you got Red Skull. If Waltz doesnt want Red Skull then Marvel should get Fiennes.
And I've been hearing stuff off Captain America being filmed in the UK and probably introducing Union Jack. Well I decided to cast Union Jack
Why not get the most badass English actor of all time for the part? That's right folks I choose Jason Statham for Union Jack. I dont have to say much of Jason just watch his films Crank, Transporter, and his upcoming 2010 film The Expendables.
Those are my picks for 2011's The First Avenger: Captain America.