Alice Cooper was/is one of those rock/heavy metal people who started off good, went ace for a while, and ended up being quite rubbish in my opinion.
He was a downright scary-looking man who wore very dark make-up, and sang songs about pain and torture. Our love is a bed of nails. (That was one of his lyrics, not a personal confession or anything.)
By FAR the best album he did was "Hey Stoopid", with such classics as "Love's a Loaded Gun" and "Might as well be on Mars" (with it's VERY catchy and yet totally inaccurate lyrics... "Might as well be on Mars, Looking down at all the cars..." Well Alice, you'd better be using some NASA approved eyeware if you want to see cars on Earth from another planet, my lad.)
Overall, Alice Cooper provided really great Rock music up until about 1990. Then he went bobbins.