I don't like Tom Baker as the Doctor, he's always so smug and up himself! And he reminds me of my father-in-law
I had my first TV crush on Pater Davison (I was about 6), I didn't like Colin Baker, and hed to stop watching McCoy, coz the storylines terrified me!
Watching the most recent Doctors, I really like Ecclestone, he was nicely distant ('I don't do families') and enthusiastic. I think Tennant's Doctor, as has been mentioned, spends too much time snogging and mucking with the timeline.
However, in reply to the original question, PAUL MCGANN! He was naff-o-rama!