No question about it. TOM BAKER IS THE DEFINITIVE DOCTOR AND THE BEST! His Doctor generated massive interest in the show all over the world, and not just in Britain. He's a huge sensation in America, CANADA(YES!!!), Italy, Abu Dhabi(as TOM famously mentions), and everywhere else on this great sphere we call Earth. Guaranteed when someone mentions Doctor Who, the first thing people think of is TOM and the long scarf. It's just so iconic. Something like this only happens once in a life-time. No one looked, acted or spoke the way TOM did, and I think that's why he is latched onto the hearts and minds of millions upon millions over the world. He was also definately the most unpredictable and alien Doctor which made for great fun in the show. TOM BAKER IS # 1!
P.S. Though I do love all the other 10 incarnations too, but TOM was my first love and as that old saying goes...you never forget your first love. TOM's Doctor brought my then child's mind on a magic carpet ride to paradise. When TOM took off in the TARDIS to see the wonders of the universe, I went with him. I'll never forget the first time I saw that wonderful man on my grandmothers rabbit ears T.V. set back in the 80's as a small child.
" 'Wibbsey' would be a wonderful word for pillow talk, wouldn't it? Especially if you said it softly..."
Doctor Who Magazine #425 (Interview)