Adobe have updated Flash Player 9 to support full-screen playback in both the standalone and browser-based players.
Full-screen playback is subject to a number of security restrictions: keyboard entry is disabled when this mode is active, presumably to prevent covert logging using transparent Flash content. Thankfully, full-screen mode can only be initiated by user interaction.
This new feature is bound to be popular on sites hosting video content – YouTube and its many imitators are sure to make use of this feature in the coming months.
More information is available over at Adobe Labs.