Roadblock tonight

At 8pm tonight, Barack Obama will take over the prime-time airwaves to deliver one more punch before polls open on Tuesday. You can see this half hour program on NBC, CBS and FOX, as well as a handful of cable networks (in the media biz we call this a Roadblock). If you have no interest, ABC will be airing Pushing up Daisies - they missed out on a huge media buy.