iTunes....iMovie Rental?

"Because the movies will be rented and not sold, people familiar with the situation report downloads will be coded with a date stamp that will restrict playback. It is not known exactly how the coding system will work, but industry experts tell Think Secret the software would likely either limit the number of playbacks or provided unlimited viewing for a period of time, after which the movie will be "turned off" and no longer available." Link

The release of these iMovie rentals will be certainly be the start of a hackers versus Apple battle to keep the movies rentals not purchases.