From the Movies board: Much as I loved the short stories and the several novels I read, I think my favorites was a collection of essays entitled The View from Serendip. The essays cover roughly a decade after he moved to Sri Lanka and feel like a good portrait of the man.
"Reunion" from Wind from the Sun. Given where we are, I think it's also worth noting "A Slight Case of Sunstroke", which is a very amusing story with soccer as a central element.
A classic line. I think my favorite Clarke story is The Star. Of the novels, I'm fond of The City and the Stars. The last of the Big Three. I think he's worn better than Heinlein or Asimov, too.