Thurl Ravenscroft died Sunday at 91. You might not know the name, but you know the voice: The New York Times obit identifies him as the man behind Tony the Tiger's "They're Grrrrreeeat!", and that's no small accomplishment, though I prefer to think of him as the man who sang "You're a Mean One, Mr. Grinch" and the Snoopy, Come Home number "No Dogs Allowed."
That only scratches the surface of his career. For a detailed fan site, go here.