The basic notion, perhaps, but I'm not sure you could really push it to the boundaries and still have it recognisably Doctor Who.

I'm a huge sci-fi fan... my all-time list of faves runs something along the lines of Farscape, BSG, Firefly, Lost, and Babylon 5... Doctor Who is close up there, although it's a completely different scale and type of show. In fact, I'm not sure I even judge it on the same merits as I do the others... British TV cannot make a series on the same scale or budget as American series (fewer episodes per season, less money per episode, etc.), so is it really fair to measure them by the same stick?

jonthecelt

PS. Oh, and Anton... if you like the Lady Cassandra... you'll love the first ep of the season 2/season28 (depending on whether you count from the beginning of the 'new' doctor', or from the very beginning...)