Here's Peter Capaldi, the new Doctor in BBC's Doctor Who. This guy's face is incredible. He's still pretty new, so I'm not sure if I like him yet. But he definitely has a lot of great expressions like this one. It'll be hard not to keep drawing him all the time.
You can watch the speedpainting here:
Or you can watch the 20 minute version for a slowed down version.
I have drawn a couple of the other previous Doctor's.
Christopher Eccleston, a.k.a the elephant ear doctor.
And Matt Smith, the wibbly wobbly Doctor.