This is awesome and just plain makes sense: With Amazon's Disc+ on Demand, when you buy a DVD or Blu-ray movie, you'll be able to stream it instantly via Amazon On Demand.
So far, they've got this going for a few hundred titles it looks like, and it's restricted to the US, but hopefully it grows. (And hopefully, they'll stop being stingy with the high def streams.) Just look for the Disc+ on Demand logo on movie pages to see if it's eligible. [Amazon via NewTeeVee]