Two technologies spotted on CNN during Elections 08 season, supposed to enhance the viewer’s experience.
1/ Interviewing an hologram
2/ Large Touch Screen that allows the anchor to manipulate images and data
Both have been heavily mocked by the Saturday Night Live and Daily Show teams, and you can understand why. But I really enjoyed watching the presentator dig into layers and layers of data, state by state, last Thursday.

NBC also made extensive use of virtual sets during their election coverage. Filmed entirely in front of green screens with interactive maps and graphics around their analysts and reporters.
An in-depth article by Wired detailing the technologies used during this campaign coverage:
http://blog.wired.com/gadgets/2008/11/election-day-tv.html