After careful consideration -

[theoriginalspy]

- And discussion with seanchaidh we have come up with two, serious picks (as opposed to the fandom silliness of picks that would be utterly ridiculous) for the new Doctor.

So, are choices for 11 are:

1) Jack Davenport:  He's the right age, height, and has previously worked with Moffat in Coupling.  He can handle the dialogue.
2) Robert Carlyle:  Because he has the persona.

So Spy for Davenport in 2010!