Unappreciated Gems

To set-up some sort of defense of some TV shows I love, I'm first going to post a list of my favourite ones that simply don't get the appreciation they deserve by certain members of the public. To make it clear what I consider to be a 'good' TV show, I'd say what I'm looking for in order of importance is:
Character development, dialogue/wit, use of theme, and plot.
Pretty simple I think. Anyway, on those criteria the following emerge triumphant:

Buffy the Vampire Slayer
Angel
Desperate Housewives
Firefly
Veronica Mars
Doctor Who

Special mention should also go to Lost, which doesn't make the list simply because everyone I know appreciates its worth, even if they themselves don't like it. Otherwise, I'd say those are the shows that have kept me most engrossed over the past 10 years.