Android may be hogging the spotlight so far in the 2011 holiday season, but Windows Phone is quickly catching up.  Aaron takes a first look at the HTC Radar 4G, a Mango-equipped Windows Phone available on T-Mobile.  It offers a 1 GHz Snapdragon processor, 3.8-inch display, 5-megapixel camera with 720p recording, a front-facing camera (finally!), and is housed in a nice metal frame that's reminiscent of the HTC Flyer.  For $100, you can't go wrong, though it'll go up against some nice Android choices from the nation's fourth largest wireless carrier.