You likely know the HTC HD2 as the phone that just can't be held in the past. While it started life with Windows Mobile 6.5, it's since met better fortunes with Android, Meego, and most recently NoDo. Now, after the leak of Windows Phone Mango RTM, things are about to heat up once again. First, we've come across a video that clearly shows the HD2 gobbling up version 7720 of this tropical fruit without missing a beat. Also, xda-developers members YukiXDA a