Babylon 5
The war is over, and Sheridan and Delen become President and First Lady. I won't even mention the numerous failed sequels.
Deep Space Nine
After several series of death and destruction, what else is there but CGI?
The X-Files
Anyone understand ANYTHING from series eight or nine? The supersoldiers? Scully's baby? Mulder's abduction? Smokey Man's continual survival? The cyndicate (save Smokey, Krychek and Fowley) perished in series six, and the suspense, intrigue and, dare I say, believability (!) burnt along with them. Its one saving grace was Doggart - I may be in a minority here, but I liked the character and his devolopment.
Bad Girls
Already mentioned, but the first two series are the fucking tits. Easily as good as often-lauded British drama classics such as Cracker and Prime Suspect. Not quite Oz standards, but this isn't American cable. Sad how they turned it into a camp sitcomesque farce from series three/four onwards.
Are You Being Served?
The show was originally written for Trevor Bannister and I believe it was after his departure that it really went down hill. His replacement in Mr Spooner was appalling. Did they ever do anything relating to the selling of gentlemen's ready-mades or ladies' intimate apparel after series six?
Only Fools & Horses
Bollocks to those who disliked the 50+ minute episodes - it is those that are the classics. The original final three episodes rank alongside Blackadder 2 and about nine episodes of Fawlty Towers as the finest situation comedies ever written/performed. The second final lot of three, well, I haven't even bothered to buy/rent them, despite having copies of most Britcoms.
Ideal
Nice little show about an occassional drug-dealer and his customers until Quentin Tarantino took over.
Yes Primeminister
Still a fantastic show, but never as perfect as the original three series.