Yep, from what I've read about him, those two are his best known works.
Yup. The classics. I like science fiction as much for its view of what the past was, as what the future could be. The glorious adventures of the 50s... the 'realistic' sixties and weird seventies... the depressing, psychological 80s and the new, close frontier 90s. Not sure what the defining theme of this decade will be. Seems to be a lot of blue-collar science fiction and way too much drivelling fantasy. I love fantasy, don't get me wrong, but nobody does it right.