When I first saw Tennant,I thought he looked like a skinny goon,but I actually really liked the episode!
I must admit that I didnt watch the last series as I have never particulary liked Eccleston!
Tennant was given more of a chance as I had no idea who he was!

Funny thing though,I assumed from the christmas episode that he was a Londoner by his accent,yet a few days later I saw him on a quiz show & he had a Scottish accent!
Wonder why he felt the need to change his accent for the Doctor?