3 - Have you seen the movie Office Space? It's a comendy about a guy who hates his job and, after being hypnotized, no longer cares about his job performance. In the icon, he's playing Tetris on his computer at work. I like this one because when I'm on LJ at work, it's kind of the same thing. I like sarcastic icons.

4 - That is a great icon. Beautifully done.