WorldLink is at the top of my list (DirecTV 375/Dish Network 9410). Independent political programming - they just aired the incredible French documentary "The Hidden Wars of Desert Storm" - , news from other countries, and world music videos. Excellent!

The Science Channel is pretty good; Sundance and IFC for movies you don't see on HBO; Food Network for "Good Eats" with Alton Brown; Comedy Central for "The Daily Show" with Jon Stewart, "South Park" (THE most subversive show on TV) and "Crank Yankers".

Cheers,
Michael