HTC has always gone that extra mile to ensure that the user experience on its mobile phones is good, and the popular Sense UI is definitely proof of that. Now the company has released the first full YouTube client for Windows Phone 7. The most important feature about the app is that it supports full HD playback over Wi-Fi. The program functions pretty fast and you get the common features such as Most Viewed, Most Discussed, Top Rated, Categories, and History. Of course, the bad news is that it’s only for HTC phones. You can download the app right now from the Zune Marketplace.