Current shows:
Enterprise
Battlestar Galactia
Alias
CSI
From the 60's:
Star Trek
Man from U.N.C.L.E.
Batman
Mission: Impossible
From the 70's:
Six Million Dollar Man
Wonder Woman
Battlestar Galactica
Happy Days
From the 80's:
Knight Rider
Airwolf
Miami Vice
LA Law
From the 90's:
Star Trek: TNG, DS9, Voyager
I know there was something else but I can't think of it???
If I had to pick my all-time favorite show it would be the original Star Trek from the 60's.