I have been a lifelong fan of Doctor Who - I am old enough to have vague memories of the first episode - although it is only more recently that I have watched Gardeners' World with any degree of regularity as it is my wife who is the gardener in our relationship.
Fortunately we are both Doctor Who fans, although in her case I think it was more David Tennant as an actor rather than the character. Hence there was some concern on her part when Tennant departed and Matt Smith took over the TARDIS. This more or less coincided with the unexpected handover of the Gardeners' World baton from Monty Don to Toby Buckland where a quick and strictly non-scinetific poll, ie chats with a view close freinds over dinner, revealed an immediate loss of direction of the programme and lack of interest in the charisma free presenter. Thus it was not entirely unexpected when Gardeners' World returned with Monty Don once more in charge.
Could the same thing happen with Doctor Who? I hope not: RTD is an impossible act to follow, and the way I look at it is that if we had not had the four series plus specials with RTD in charge then we would welcome the new incarnation with open arms. It's not wrong: it's just gone off in another direction, just like Doctor Who has done throughout its history.
I love the steam-punk look of the series and from all the clips I've seeen so far the next story, from a script by Neil Gaiman, should be asbolutely magificent.
Any if you want advice on celery, then talk to the fifth Doctor