The Knowledge Navigator supports video phone calls and collaborative manipulation, as shown here.
Following Knowledge Navigator, most significant IT companies presented their own future visions in a similar manner. The films were all rather expensively produced, with professional actors and high-quality camera work, special effects and post-processing.
It is fairly clear that we are now outside the realm of sketching. Pitch movies are not sketches. They certainly communicate design ideas, but they do not appear as the tangible part of an ongoing thought process. Moreover, they tend not to invite dialogue and constructive criticism.
On to ANIMATED USE SKETCHES.