Did you know that the word "jumbo" originated from the name of an African elephant famed for being the largest of his kind? HTC will be well familiar with that tag having already rattled off the HD2, EVO 4G, and HD7 in a smartphone-dwarfing 4.3-inch form factor. And while that may not be the largest screen you can have your Android confectionery on today, it's arguably the upper limit of what we might consider a pocketable device. The HTC Desire HD follows, and seeks to improve upon, its laudable predecessors with an aluminum un