If you've never read him, here's a tiny description of what you've missed.
From the BBC News:
British science fiction writer Sir Arthur C Clarke has died in Sri Lanka at the age of 90.
In the 1940s, he maintained man would reach the moon by the year 2000, an idea dismissed at the time.
He was the author of more than 100 fiction and non-fiction books, and his writings are credited by many observers with giving science fiction a human and practical face. He collaborated on the screenplay for 2001: A Space Odyssey with Kubrick.
[Oh! So much more!]