ArsTechnica reports the streaming service for Macs requires FireFox and a Microsoft Silverlight plugin (for PlayReady DRM). Currently in testing, the service should be available to all Mac Netflix customers by the end of the year. Woot!
Oh! And streaming to TiVo (Series3, HD and HD XL models) is slated to begin by December, Xbox 360 with Xbox LIVE Gold membership in “late fall.”