Voted for Depp.
Quirky and strange characters are his forte so a character called 'Doctor Strange' seems almost perfect and fated.
Before his star went astronomical with Jack Sparrow, Depp had carved out a nice little niche for himself as a versatile character actor known for picking non-comercial projects that interested him.
I think a lot of people have forgotten that because of the over saturation caused by POTC's 1,2 and 3.
I perosnally think Depp would be awesome in this role - and his known wouldnt look out of place alongside Norton and Downey Jnr etc.
Not to mention the fact that the guy was seemingly born with the perfect facial hair for Strange.