HGTG is simply a masterpiece. It was originally a radio programme, though, not TV. You can download the radio version from audible.com and experience it all over again --without having to wait a week between episodes! There's also Stephen Fry reading the book version. I love audible.com and listen to audiobooks in my car and on my walks -- when I'm not listening to the podcast, of course!
It was a very short (6 episodes) run, but it was on TV! :D We had tapes of the radio series [and all the books, of course] so I was very excited when PBS aired the mini-series. This may have also been my first try at recording something with that new VCR thing... Audible.com and I are good old friends. If my husband wasn't such a chatterbox on our commute in, I think I would still have my subscription! ;)