"What would you steal from the Eleventh Doctor?" David: "I love his TARDIS, it's a wonderful piece of work." "What would you steal from the Tenth Doctor: "Rose, 'cause I love Billie, she's a good friend." "So they want to steal each other's girlfriends?
This is actually helpful for people who want to start watching Doctor Who. For the record, I started with Eccleston (because that's what I was shown), watched through the New Who, and am now going to start on Classic Who :)
I think it's hilarious that the episode that's pretty much always regarded as "The Worst Episode" came out with the quote that sums it up so well.<--- Worst episode is everyone's fave. We just don't talk about it.