This list from the retro gaming site Old-Wizard.com goes through the top ten best boss fights of all time. The fight need not be difficult so long as it was fun or unique.

Diablo: This is every born again Christian’s wet dream. To actually fight the devil and then take the pulsing crystal, which most likely contains his soul or essence, and shove into your forehead. That way you can become even more self righteous and annoying. I mean everyone knows the world is filled with evil, and everyone knows only the born agains can save us from it by making everyone exactly as fanatical as they are. But imagine if you claim you are bearing all the world’s evil… in your forehead. You would be one hell of a good born again, excuse my pun. This fight was pretty difficult the first time, but once you figure out a few tricks it took no more than a few minutes. The fun of it was that you were killing the devil and everybody wants to do that, if only in hopes of replacing him and becoming the lord of evil yourself. Which, if I understand the sequels correctly, you do.

Zeromage via old-wizard.com »