Have Your Say: Who's The Best Doctor Who?

Browsing around the Internet, I saw all kind of screenshots from the upcoming Doctor Who series, with people running through a landscape with explosions left and right.

"Hm... that doesn't actually look like what I think of, when I think of Doctor Who", I thought. Then again, what expectations can you have with the famous timelord? The character, the series, and the people playing in it have changed so often...

Which brings me to the question of the week: who is your favorite Doctor Who?
It's a big question, I understand. I fully expect the gloves to come off this week, for few series can boast of the kind of fandom that Doctor Who has had over the decades. And all actors count, whether they've been the timelord for years or for a single outing, young or old, recent or classic.

So chime in, in the comments below, and feel free to elaborate your opinion with examples and episodes!
HAVE YOUR SAY!