I was recently brought into MySpace to consult on rebuilding their Video Player. The previous version was a bit long in the tooth and was proving difficult to update, so it was decided to re-code from scratch in AS3. I worked on the interaction design and prototyping as well as building out the new AS3 framework.
The new player features flash full-screen mode, a related videos menu, skinning support, ad support, localization support, HD video support, plus the usual sharing features. Kudos to the MySpaceTV team for knocking out a quality product in a short time-frame.