Aside from Johnny Depp (I know, I'm biased. Sue me) This is my favorite Mad Hatter, from a short SyFy TV series.
[hider=Andrew-Lee Potts][img=http://images2.fanpop.com/image/photos/9300000/Alice-Syfy-Movie-andrew-lee-potts-9377817-581-395.jpg][/hider]