Using videos as part of KM

According to YouTube.com blog YT has introduced new tool called YouTube Screening Room. It is directed to producers/directors (often one person) of off-movies. Thanks to this tool off-movies can be seen by a greater audience all over the world, and producers can acquire more money thanks to ads generated on YouTube site with their movie. How it is related with KM? I thought - if Wikis and blogs are used for posting solutions or Best Practices why we cannot do the same with videos? All the technology we need is reachable, so it is just up to us how we use it. I think that training - how to fix jammed paper in copying machine - posted as video, will be much more effective then the same training posted as photo-story or plain text.