Comments on this post
Don't forget that you have to have lots of binary whizzing around the background, so the Hacker/CTU agent/Spy knows that they are, in fact, using a computer and not a television/mobile phone/dishwasher. You simply can NOT do anything productive on a computer if you don't have an entirely customised operating system interface!
Let's not forget that you scan people with lasers frequently so you can have 3D models of them rotating placidly as you talk about them or have wireframe models of them indicating where something was implanted/removed/discovered.
*Goes off to customise OS*

