I've recently taken to not only coding what I'm doing but why I'm doing it. Although this makes for far more comments than normal (whatever that means), it has certainly saved me many brain runs (e.g., why did I ++$x rather than $x++ ?). A simple line stating "I'm ++$x here because . . ." has saved me probably hours of scratching my head, kicking myself, and wishing I'd bought more beer.

If things get any worse, I'll have to ask you to stop helping me.