Over the years, we've seen a steady stream of business and messaging-centric landscape QWERTY smartphones come and go, with HTC arguably leading the pack via its collection of Windows Mobile, Android, and WP7 devices featuring sliding keyboards and tilt-out displays. But few of HTC's offerings are as iconic or memorable as Nokia's line of Communicator clamshell phones -- starting with the Nokia 9000 in 1996, continuing with Symbian S80 models, and culminating with the Nokia E90 atop S60v3. The Nokia E7 is the latest Communicator in this distinguished series and the manufacturer's current flagship device, dethroning the Nokia N8 which continues on as the company's media mogul. A lot has changed in the six months since the N8 was introduced, including Nokia's recent partnership with Microsoft and the stunning announcement that it will be adopting Windows Phone for future high-end smartphones. So, is the E7 -- which is finally shipping in the US -- th...