Sky Render on 31 January 2008
Last bosses weren't always throwaway fights you were assured to win. The NES in particular had a lot of games with last bosses that were quite hard. And some more modern titles like Brave Fencer Musashi have taken a stab (only somewhat successfully) at making a last boss that requires some real effort to beat. And then there's the likes of Arc the Lad: Twilight of the Spirits, where the last boss is more than happy to turn you inside-out if you don't fight the battle exactly right... There's a fine distinction between challenge due to variety and challenge due to unbalanced design.
Sky Render - Sanity is for the weak.
