Museum of Television and Radio & Digital Knowledge Ventures
My visit to the Museum of Television and Radio was an alien experience to me. They explained as I entered how it worked - you could view screenings which are at certain times of the day, then visit their library of television shows and films. They also had a choice of 5 radio programs running on loop all day
This was very strange as there were no artifacts - at least none I'd seen. Unfortunately I missed the museum tour which started in the gallery downstairs. I ventured upstairs just in time for a show's screening. There are several rooms so you can pick and choose throughout the afternoon (it's only open from 12pm).
Later on I visited the library, which (as they explained) allows you to choose 2 shows or films to watch in a private booth. These booths were great - and they would be fantastic for any large film archive
I also visited Vivian at Digital Knowledge Ventures, which is part of Columbia University. They have done some great work for museums, including many websites and interactive touchscreens (using Director). I've got a lot to look at when I get back, especially one of their current projects for the Library of Congress.