Tom Baker was my first doctor, really. I saw previous ones, but I was really too young to remember much about them. Tom Baker is indisputably my favourite among the "original series" doctors. The "rebooted" series, starting from 2005, really puts the orignal episodes (1963-1989)in the shade in terms of scriptwriting. There's some utter gem adventures in the olde stuff, but the new stuff (2005-20011) is really more adult at heart, even if it's still PG rated.
Chris Ecclestone (2005 Doctor Who) chose to do only one season, because he didn't want to get irresolvably typecast as the Doctor, like Tom Baker did. David Tennant is probably my favourite Dr Who overall, so far. However, Chris Eccleston did a bang up job too. And the 2005 season with CE is one of my favourites because of the truely great scripts, that seriously stretched the Dr Who universe, and critiqued the original premise of the earlier show. And well, there were just bloody good script moments through the whole 2005 CE/Rose Tyler season.
IMO there are bloody good scripts through the David Tennant and Rose Tyler season (2006), and the David Tennant and Donna Noble (2008) season too. While I enjoyed the Martha Jones season well enough (2007), I didn't like it as much as the others. The best of that season was the very first "Weeping Angels" episode called "Blink". "Blink" has to be one of the all time best Dr Who episodes.
Matt Smith and Amy Pond are a good Dr/Companion duo (2009-2011), but I don't think they are as wonderful as Chris Ecclestone, David Tennant, Rose Tyler, Donna Noble, the strangely charismatic Professor River Song, and the drop dead gorgeous Jack Harkness.
A special mention must be made for Catherine Tate as Donna Noble. Catherine Tate isn't all that attractive physically, but she managed to make Donna Nobel hypnotically attractive through sheer force of personality. So yeah, my favourite seasons: 2005, 2006, 2008, and the "Blink episode of 2007.
Edited, May 12th 2011 5:52am by Aripyanfar