King Solomon's Mines is excellent fun, but be prepared for some nasty racial talk (though Haggard/Quatermain makes a point of his respect for Africans; you'll see).

TSCoDJaMH is one of my favorites from long back. I love how Stevenson refuses to describe Hyde, merely saying he's somewhat "simian" or that there was something ineffably wrong about his appearance. Moore was taking off on what Stevenson said about the character, re: Jekyll shrinking and Hyde growing. A fine book. I love that it was based on a dream.