We've just finished watching S4 (4 epis in one sitting) and I can say with pride: I have successfully turned my daughters into Doctor Who fans. :) They both adore Ten (well, who wouldn't) and they love Captain Jack. #1 loves Donna, #2 loves Rose, both hate Donna's mom....
K. has a Ten wallpaper on her computer where he's holding a cat in his hand, and she found a band on youtube who base their music and all their lyrics on the Doctor Who canon. V. has started reading (German) fanfic (something with a pre time war parrallell universe with the doctor and the master... )
I must say, I'd forgotten how good S4 is. Definitely my favourite.
Oh, and have you seen this? K. found it....
Click to view
One thing I hate about myself is that I'm more of a glass-half-empty person, but DW has a way of making things better.... Never fails to cheer me up....