Just how big is HP's new Pavilion HDX laptop? If Dan Ackerman's video doesn't give you a sense of scale (who knows, Dan could be 3 feet tall, making the HDX appear much larger than it really is), then perhaps this slide show will help. Let there be no doubt, this is one massive mobile PC. The HDX so big, in fact, we don't know of a laptop bag that could contain it. More details here.