Chris Evans comes off as very likable in all the promotional material we've seen for Captain America: The First Avenger so far, and he played the good soldier last night, delivering the "Top 10 Things Never Before Said By a Superhero" on The Late Show With David Leterman. He affably pokes fun at superheroes, domestic and international news, and does what every superhero film star does best - he make the most of the material he has to work with.