The one time I met Roger Ebert, he was holding court…and I sure got the feeling that he was the kind of guy who didn't talk to anyone, even himself, without holding court. But you can do that when you're Roger Ebert because he was a smart man who always had something to say.
The topic was Oliver Stone's film JFK and Ebert asked — rhetorically, because he really wasn't interested in getting a dialogue going with strangers — if we could name a single credible person who believed Lee Harvey Oswald was the lone assassin in Dallas on 11/22/63. A bunch of us called out "Walter Cronkite" and he didn't like that much.
I always found his writing intriguing, earnest and well-written. I didn't always agree with it but it was always worth the trip. Movies had no better friend and they're going to miss him. As will we all.