Check this out: http://www.thrillnetwork.com/news/2788/hollywood-rip-ride-rockit-details-emerge.html#more-2788
A new rollercoaster to be built at Universal Studios Florida will, for all intents and purposes, be the first ever new media rollercoaster. People who ride the coaster will be able to choose from several different pieces of music to hear (that only they can hear) and switch them and interchange them during the ride, supposedly allowing for every ride to be different. Additionally, the entire ride will be captured on camera, and what music was playing at what points for each rider will be saved and added to that video, which can be purchased at the end of the ride.
Now, maybe that’s not real user-generated content, in the sense that you can’t bring your own music or insert your own video, but for a rollercoaster it’s pretty darn close. I don’t know that this will lead more people to purchase on-ride video, but whether it does or not the music part is certainly a cool concept. Although…. I wonder if you can just turn the music off and enjoy the ride without?