Also on the good-for-you menu is ''Assignment Discovery: Great Books,'' a blend of commentary on and cheesy dramatizations of classic works, apparently aimed at high school students. The creators of these video Cliffs Notes seem keenly aware of adolescent tastes, and they could have called the series ''Great Books With Lots of Screaming in Them''; of the four episodes I've seen, three were about works -- Dante's ''Inferno,'' ''Metamorphosis,'' the stories of Edgar Allan Poe -- that afford ample opportunity to show images of shrieking faces shot through a fish-eye lens, not to mention the rats and the squirming insects.