Were I to cast a version of The Tempest, I would cast Nathan Fillion as Antonio. He has a tendency to play characters who, like Antonio, can be joking one moment and killing someone the next. I chose this image because, despite the improper time period weapon (okay, and the context of the image), he looks quite determined and intent on his goals. This is exactly as I picture Antonio looking in the moment before he attempts to kill Alonso.
Source: http://www.movieline.com
