Also, with print screen you can hold alt as you press prt scrn to take a screenshot of just the current window. There's another thing you can do other than screenshotting the whole screen as well I think, but can't remember what. Snipping Tool is pretty cool too for grabbing specific areas.
About that 2k Australia guy, that's a nice "present" for his colleagues, but I really hate it when people use rapidly changing colours, it really isn't nice to the eyes :P