Series 1 is my favourite starring Chris Eccleston as a kind of working-class wounded warrior.
Some brilliant stories here like Father's Day, Dalek, End of the World, The Empty Child, Parting of the Ways. A powerfully emotive series and a successful relaunch for the show (forgive me, but I can't quite remember the huge billboard campaigns for Twin Dilemma or Time and the Rani having the same impact). (10/10)
Series 2 - not as good, a bit over-confident in places e.g. the season opener (New Earth) but the 2-parters are all excellent, especially The Satan Pit. (8/10)
Series 3 - best stories here are Gridlock and the outstanding Blink. The Master trilogy falls a bit flat however. (overall 9/10)
Series 4 - unexpectedly good companion and a great romp that gets better and better as the season progresses. (9/10)
The specials are a bit weak but Tennant's send-off is fantastic! (8/10)