I recall in my first run through QFG II as a magic user where I beat the developers. There's one part where a "bad guy" is casting a spell inside a pentagram of candles. Okay, so I was supposed to fight him, but since I had a Zap spell I used it to knock a candle over in order to interupt his spell casting. (Well it made sense at the time). Anyway, suddenly up pops a panel with text something like "You've done something we didn't think of. That's really clever! But now the game can't continue. Press <whatever key> to load your save game". I laughed myself silly. Made me an ever bigger devotee of the spirit in which the game is written and played. This series comes from a time when Sierra was one of the best and most reliable Game producers.