Mine:
Brothers & Sisters - I was obsessed with this show from the very first episode and may or may not have shed a tear when I found out it was ending after five seasons. I didn't like the ending, it seemed rushed and story lines were left hanging. Twats.
Friends - Of course. Who didn't love Friends?
Accidentally On Purpose - I'm pretty sure this was cut after the first season so can't have been very popular but I loved it!
Without A Trace - My favourite crime drama, I was devastated when it ended. Why couldn't they have taken NCIS?! Why Without A Trace?!

Your turn...