I don't commit a lot of video game bosses to memory, and so the strangest--which is just another term for original in my book--was the Nihilanth from Half-Life. Yes, I'm behind the curve on Half-Life; I haven't even finished 2 yet, much less Episode 1 or 2. No, I don't care that I'm behind the curve on these admittedly-epic games. Yes, Half-Life is awesome.