Sam Rockwell was considered for the role of Tony Stark in &#39;Iron Man.&#39;  However, the role went to Robert Downey Jr.  But don&#39;t worry, Sam got the role of Justin Hammer in &#39;Iron Man 2!&#39;  Pictured:  Robert Downey Jr. &#40;left&#41; appears in a scene from &#39;Iron Man.&#39;  Sam Rockwell &#40;right&#41; in a scene from &#39;Matchstick Men.&#39; <span class=meta>(Warner Bros. Pictures | Paramount Pictures)</span>