Research: Interactive Video.

A cool part of interactive design is the use of YouTube to make interactive stories with different outcomes. This is done simply by having links at the end of the video that go to other videos, depending on the choice of link. A good example of this is Luigi's mansion: An Interactive Adventure Game by DrCoolSex.

Another, and possibly better example is the recent video released by Bob Dylan, which has you flipping through channels, while all the actors of the TV shows are mouthing "Like a Rolling Stone". I love this so much, and I would love to do something along these lines.

http://video.bobdylan.com/desktop.html