Although this is a really blatant example, I've also noticed lots of copying across TV shows. No, lack of creativity. Word processors never display a cursor. You never have to use the space-bar when typing long sentences. Movie characters never make typing mistakes, even though what they type often doesn't show up on the monitor.
People typing on a computer can safely turn it off without saving the data.
Those computers that don't have graphical interfaces have incredibly powerful text-based command shells that can correctly understand and execute commands typed in plain English. All computers are connected. You can access the information on the villain's desktop computer even if it's turned off. Powerful computers beep whenever you press a key or the screen changes. Some computers also slow down the output on the screen so that it doesn't go faster than you can read.