Hey Dana.
I LOVE CSPAN! Watch it all the time. CSPAN 1, 2, and 3. You'll get a good sampling of most points of view both Conservative and Liberal. They often cover presentations of various "Think Tanks" that we have here. I like Washington Journal for the call-in comments; everything from lucid intelligence to fanatical ranting.
BookSpan, another part of CSPAN is equally good.
Glad you like it.
http://www.cspan.org/