YouTube works just fine in Internet Explorer 10, but if dedicated apps are more your style, you should install PrimeTube. PrimeTube presents YouTube in an interface that feels right at home on Windows 8, allowing you to browse YouTube in that tile-tastic modern style.
PrimeTube isn’t just a YouTube player, though. The app allows you to log into your YouTube account and view your subscriptions, manage playlists, and leave comments. PrimeTube also continues playing YouTube videos in the background—something that can’t be done with Internet Explorer. It’s perfect for music and speech-heavy vids.