VUDU made some pretty big waves with its Blu-ray-rivaling HDX downloadable format, and now it's pushing the envelope once again by becoming the first on-demand service to actually sell (as in, for keeps on your box, anyway) HD and HDX movies. Starting today, all VUDU owners can browse a growing library of for-sale high-definition flicks, and it should be noted that both HD and HDX titles will sport the same price tags (between $13.99 and $23.99). Initially, only around 50 films will be available, all of which are from top independent studios. Magnolia Picture's Man on Wire, which just so happened to take home an Os
