What TV Shows Do You Collect?

[koontz1973]

Looking to get some new shows in the next couple of months, and as I cannot watch before I buy, I thought, why not ask what everyone else collects and why?

My collection includes:
US Shows.
The X-Files, Friends, The West Wing, Monk, Magnum P.I., King of the Hill, Family Guy, American Dad, Lost, MASH, 24, Home Improvement, Desperate Housewives, Boston Legal, Battlestar Galactica (original and remake), The Shield, Greys Anatomy, Star Trek (All), Eureka, House, Veronica Mars, Weeds
Supernatural, Deadwood, Numb3rs, Dexter, Babylon 5, Six Feet Under, Brothers & Sisters, Buffy.

UK Shows
Inspector Morse, Jonathan Creek, Monty Python's Flying Circus, Black Adder, Fawlty Towers, Yes Minister/Prime, Black Books, League of Gentlemen, Dads Army, Hancock, Life on Mars, Spaced,

And a few others, but you can get the feel of what I like

What's good?
What's on Blu? (region B/2 only I am afraid. DVD is good from everywhere)
What's had more than one season as I get annoyed buying a show, liking it, for it only to get cancelled? (Jericho, Sarah Connor)