I dreamed about Tetris, when I was younger. I loved the Tetris i had, because it wasn't too fast. In the highest level it was hard, but not unplayable. But it had a bug, the score was a 16bit signed int, so you could have negative scores, but they were bigger than the positives, so my best score was -6. (The ugly thing was, that you got 100 points, when a line vanished, and more than once i had +100 or so. Back to dreaming: I remember seeing the stones falling down before falling asleep.

Until now i never dreamt about perl, but i remember dreaming about math. And the ugly way: "This inequality is wrong." (It was right, a very bad thought, if you wake up in the morning and think this about the exercises that are due today.)