New. Killer. Content. Delivery. The Amazon Cloudfront. Stick your media files on S3, create distributions, and now you can serve you media files to anywhere in the world with great performance.
Go global!
(Althou it doesn’t solve my problem of uploading contents to Amazon S3 taking too long thru my puny ADSL line.)
Update (23/11): Performance serving Flash movie seems to be about twice as fast as plain old S3.