I'll go you one better. We were shopping for security cameras for work, and the salesman told me that his sales dropped to 50% due to the fact that his systems won't do what you can do with the video surveillance systems you see on CSI, and potential customers were looking for something that you could blow up 500% and eliminate pixilations. Worst part is, they would not believe him when he explained the magic of Hollywood!
actually, there are some better camera systems available that you can blow up quite a bit. they are very high resolution and non-interlaced, and completely digital to boot. they are also not your typical cheap surveillance type cameras. I saw a demo of one once that just blew my socks off. they seem to be used mostly in industrial facilities where you used to have to send an operator walking around to see certain things. Now you can just use the camera because it is good enough.
because they are not interlaced, essentially they take a complete picture every time instead of half a picture which dramatically improves the still pictures you get from them.