Whether you're a sports fanatic or a movie buff, December is generally a good month to sit down in front of the tellybox. One way to treat your eyeballs is via Sky's standalone Now TV streaming service, which is preparing for a busy Christmas full of movies, TV shows and live sports coverage. Instead of grappling with the Now TV website though, Sky has finally released a proper Windows 8.1 app for you to sink your teeth into. Available from the Windows Store, the new app embraces Microsoft's unique Metro aesthetic and features both live channels and on-demand video for its three (Entertainment, Movies and Sports) passes. In recent months, Sky has been busy bringing Now TV to new set-top boxes, including Apple TV and Chromecast. Broader platform support is always welcome, but it's good to see that Sky hasn't forgotten about desktop users -- so how about a native Mac app?