Esquire's profile of Roger Ebert is blazing through the blogosphere:
The last thing he said? Ebert thinks about it for a few moments, and then his eyes go wide behind his glasses, and he looks out into space in case the answer is floating in the air somewhere. It isn't. He looks surprised that he can't remember. He knows the last words Studs Terkel's wife, Ida, muttered when she was wheeled into the operating room ("Louis, what have you gotten me into now?"), but Ebert doesn't know what his own last words were. He thinks he probably said goodbye to Chaz before one of his own trips into the operating room, perhaps when he had parts of his salivary glands taken out but that can't be right. He was back on TV after that operation. Whenever it was, the moment wasn't cinematic. His last words weren't recorded. There was just his voice, and then there wasn't.
Ebert adds a few more thoughts at his blog.