Here's a tribute from MacWorld. Michael Crichton said on several occasions that he was a Mac user. The tribute was written by someone who exchanged emails with Michael:
I was deeply saddened to read of the passing of Michael Crichton, at the way-too-young age of 66. Michael was an amazingly talented individual, as evidenced by his background—a Harvard-educated medical doctor who wrote The Andromeda Strain while still in medical school, and then wrote (and directed the movie version of) The Great Train Robbery...
Links and more info on Michael Crichton at: