If they ever did an I, Claudius remake...
If the BBC or another studio ever did another remake of I, Claudius, this chap should play the title role. Jamie Bell has got the acting chops to portray Rome's famously "lame" emperor and could likely play him from teenaged bete-noir of the Imperial Family to middle-aged emperor. He also has a similar look to Claudius, no?
http://www.accla.org/actaaccla/claudius.html