Since August 2006 I have been working with the excellent folks at Rouxbe. Specifically I have been involved in the design and development of the Flash based video players. Gagan Diesh, who got me involved in the project, has a nice post about Rouxbe on his DesignStamp blog.
I am going to take the liberty of tooting our horn here and say we have done/are doing a great job with the players and site. Adobe seems to agree, as Rouxbe is the site of the day. You can experience Rouxbe for yourself right now by signing up for a free account. There are lots of interesting features to come, so stay tuned.