Heinlein, of course. I loved his Lazarus Long stories, and really loved both Job and Number of the Beast.
Stephen Donaldson's Thomas Convenant books: talk about an "anti-hero!", as well as Terry Brooks "Shanara" series are both fun fantasy.
I think that I read Asimov and Herbert while I was too young to really appreciate either the Foundation series or Dune. If I had more time, I'd try reading them again.
I was brought up on Edgar Rice Burroughs. I learned to read with Tarzan, but I really went nuts with the John Carter of Mars books! And Arthur Conan Doyle's "Pelucidar" books. And later, Robert Adams' "Horseclans" books, if you can find them. "Cat of a Silver Hue" is still one of my favorite books ever.
Damn, I could go on for hours and hours.
Mark
Hah. I saw the title of this thread earlier and thought of Piers Anthony. While there are many great authors and novels, my first thought was of his Incarnations series.
Hey MarkL, Pellucidar is by ERB, if I recall. But you win the thread by mentioning Fritz Leiber. Have you ever read Gene Wolfe?
Freegards