I came across this today and was seriously surprised at just how much of what we see in Film and TV is 'fake'. I know we're all familiar with 'green-screen' work, especially in GC and effects laden extravaganzas, but this really took me aback as to just how much of what we see is in fact a 'constructed reality'.
[youtube]http://www.youtube.com/watch?v=clnozSXyF4k[/youtube]