The thing is, it's a combination of talents and personalities I'd never have thought of - not in a million years.

There are quite a few reasons to be grateful to RTD - but even there weren't any others, I'd certainly be indebted to him for this one :-)

I think they have a similar relationship to the one that Ten and Donna had - they adore each other (as Rusty says - "big time")... and I do think he's a little bit - well perhaps not smitten romantically - just... whatever the platonic equivalent is!

Or as DT, himself once put it - he's Catherine's bitch. ;-)