I dunno, 15-20 minutes?

NBC unveils self-destructing, ad-addled anti-iTunes service
Published Thursday 20th September 2007 19:29 GMT“
By Cade Metz in San Francisco
Published Thursday 20th September 2007 19:29 GMT

Less than a month after its very public breakup with Apple iTunes (http://www.theregister.com/2007/08/31/apple_and_nbc_go_at_it/), NBC Universal has announced its own rights-restricting video download service.

With the new NBC Direct, due for beta testing sometime in October, you’ll have the power to download shows like “The Office” and “Heroes” immediately after they’re broadcast on national television – without paying a penny. But don’t get too excited. You can’t view these videos on more than one Windows PC. They’re riddled with commercials you can’t skip. And they self-destruct after seven days.

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You got a love it. Take all the worst features of bloody mindedly stupid DRM, and wrap it all up in one tight package.