In no particular order...

Charmed
Firefly
Buffy the Vampire Slayer
Weeds
Bones
White Collar
Archer
Nip/Tuck (the first 4 seasons, anyway)
Torchwood (first 2 seasons)

And, probably topping everything at the moment, is Pushing Daisies. So good. <3

"Lois Lane is Clark Kent's Superman." - Brian Miller