MediaChannel, a progressive group of websites, has just introduced MediaVision. Now you have watch TV news and political talk on-demand from "the top 27 TV markets, plus CNN, MSNBC, Fox, C-SPAN, and other cable networks for free." Plus, here’s the kicker – it’s searchable by keyword and topic.
You can get an hour for free. A full feed is $209 a month. Not cheap, but this is a service no one else has (yet.)