I often find myself working on something that takes awhile to run. I make a change and then have to wait up to three minutes before I can see the result. It's enough time that I feel silly just staring at the screen, but not long enough to accomplish anything else. So I usually check hn or my email and end up losing 15 or 20 minutes. There have to be a lot of other people with this problem. What do you do while you're waiting a short time for something to run or compile?