They're doing the same today (sorry for late notice), with live streaming video of the Senate debate on the financial reform bill, and with live reporting by Sunlight's team, including contextual information such as campaign contributions from the financial industry to the senator speaking in the video.

At the same time, they'll track topics related to the financial reform debate on social media like Twitter, answer questions and respond to comments from the audience, and will provide scads of political data on senators and on the ties they have to special interests and lobbyists.