Such a sad day. I've enjoyed countless hours of his performances, and even watched with interest as he made the transition from a disappointing figure to science fiction fans as he proclaimed "I Am Not Spock" (from this I learned that the actors are not their characters at a very young age), to eventually coming around and embracing his fans, proclaiming "I Am Spock".
After the release of his second autobiography, I Am Spock, he became a bigger science fiction icon than ever, and delighted millions of fans through appearances on science fiction shows, reprising his role in the Star Trek reboot, and by meeting them in person at numerous conventions. I'm certainly one of those fans, and would watch any appearance I heard about, whether it was on Star Trek: The Next Generation, Fringe, or some other show that was lucky enough to have him.
He played a great science fiction hero and became an ambassador to a genre so many of us loved while fitting his own artistic talent as a poet, a writer, director and actor in between.
On a more personal note, he always reminded me of my grandfather. Something about seeing him on screen helped me through his passing years ago, call me crazy, but it truly did.
Back to the real Nimoy for a moment. He was a supporter of other artists from early in his career. In fact, when he was cast as Spock for Star Trek, he was already busy running his own method acting classes. By reputation, I know he was interested in elevating other artists, not using them to pull himself up.
By all accounts he was an irreplaceable entertainer, he gave us many hours of performances, and other art to enjoy.
Thank you Mr. Nimoy, you were larger than life and we'll miss you.