BBC has some great original programming:
Sherlock - a modern take on Sherlock Holmes. Only 3 episodes made so far, but the guy that plays Sherlock is perfectly cast and the guy that plays Dr. Watson will be Bilbo Baggins in the new Hobbit movies.
Jekyl - another modern day take on classic literature. This is about Dr. Jekyl dealing with his Hyde alter-ego.
Dr. Who - this is my wife's favorite show on TV. This is the best Sci-Fi show currently on TV.
The Mrs. and I just finished the original Star Trek series, which holds up surprisingly well - Netflix even has it available to watch in HD and 5.1 surround.