Okay, I grew up on Who, but haven't loved a Doctor since Tom Baker. Christopher Eccleston made me love Who again and I'll be furious with him forever for leaving.
The writing is grand, the acting superb, the directing (which was dreadful in the old days) is just fantastic. I was very skeptical about this programme, and watched it merely out of being forced, but am now a huge fan and love it (I have a ringtone of a Dalek screaming "Exterminate" then).
A few of the things I love about the new programme -- 1) people actually notice when Rose (Billie Piper) disappears off the planet. Some of the old shows an assistant would drop off for a while, and then come home like nothing has happened, no one noticed. 2) Chris Eccleston's doc loves Rose -- romantic or not will be debated, but there is no doubt that 9 loves and cares about his companion. He'd destroy the world if he had to to save her, which the old show was lacking -- often a doctor wouldn't care if he never saw his assistants again. 3) They talk and think like real people -- when Rose is shown something outlandish or new (such as aliens) she acts like a real person would -- gobsmacked. I never liked it when an assistant from the old show, who never saw anything alien, would just fit right in and adapt instantly. I want to see the surprise on Rose's face when she sees a plastic dummy come to life. She gives that to me.
The few things I don't like about this series: 1)nearly everything happens on earth (London or Cardiff) and I was sort of hoping for a more off-world sort of show. 2) That Eccleston left so quickly, he really made the show brilliant.
But I can let those few things go -- I far more enjoy the series than I ever expected to, so I don't mind if they have stuff set on earth.
Just don't take this show seriously -- it's fun, it's smart, it's entertaining, but it's not a super-serious heavy duty show. It's pure fun, and pure British, and I can't get enough. Watch it with an open mind, and just put your brain into neutral and enjoy!
ps -- don't watch series 2 or later. series 1 was brilliant, the first few episodes of series 2 were good, but don't watch it once it gets to Love and Monsters. Utter rubbish, completely destroys the show.