Hitchhiker's Guide (original series)
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!