Eldritch Wizardry was the supplement for dungeon masters who didn't like to kill off player characters, so needed more end-game content for them as they continued their inexorable rise (hmm, sound familiar, MMO players?). We used the psionics rules from it for a campaign, but they suffered from extremes: almost no-one had anything usable, but when they did it was utterly devastating.
I'll have to keep this copy in its plastic bag, because it stinks of stale tobacco.
I wonder if more young men were turned onto D&D by the cover or more young women were turned off by it?