I watched it (and loved it) up until Rimmer left and Kochanski became a permanent member of the crew. I never watched any of the new stuff on Dave, although I heard it was quite good. Is it worth watching?

Favourite episodes:

Confidence & Paranoia
Thanks for the Memory
Queeg
Backwards
Polymorph
Timeslides
The Last Day
DNA
Quaratine
Back to Reality
Polymorph 2
Rimmerworld
Out of Time

The parallel universe Holly was actually called Hilly IIRC, but when Holly decided to have a sex change he modelled his appearance on her.