This may be old news for some, but I just learned about it - check out all the info. at Criterion's site. Here's a quote from the site/their FAQ page:
"ONLINE
21. I’ve never watched a movie online at the Criterion online cinematheque. How does it work? What does it cost? What do I get?
Watching movies at criterion.com is easy. Click on FILMS, choose a film, and click where it says “Watch movie $5.” You’ll be asked to enter a credit card, and for $5 you can watch the movie right in your browser or full screen, as many times as you want for a full week. For a year after that, we’ll keep a $5 credit on file for you and apply it to your purchase of that film on DVD or Blu-ray disc. Use it as a way to explore different parts of the collection, get a little daring, or just “try before you buy.” And best of all, each dollar you spend on online rentals gives you points in our loyalty program.
(back to top) "
More here.
"ONLINE
21. I’ve never watched a movie online at the Criterion online cinematheque. How does it work? What does it cost? What do I get?
Watching movies at criterion.com is easy. Click on FILMS, choose a film, and click where it says “Watch movie $5.” You’ll be asked to enter a credit card, and for $5 you can watch the movie right in your browser or full screen, as many times as you want for a full week. For a year after that, we’ll keep a $5 credit on file for you and apply it to your purchase of that film on DVD or Blu-ray disc. Use it as a way to explore different parts of the collection, get a little daring, or just “try before you buy.” And best of all, each dollar you spend on online rentals gives you points in our loyalty program.
(back to top) "
More here.