This should apply to games too lol. I hope one day we can rid the world of the 'load screen'! Perhaps with more SSDs and developers putting effort into streaming (both from net and hard-drive), it'll be possible ;)
Streaming essentially disables fast travelling and teleporting to some extent, but makes slow travelling seamless and much, much more enjoyable. World of Warcraft was among the first online games to get it about right at launch, and I'm pretty sure the absence of loading screens was a huge factor in its universal acclaim.