We spent some time with Brent Spiner (and many others) at the San Francisco convention last November. He was great! I had heard so many negatives about him, but that was not the case with us. He was friendly, funny, and seemed genuinely interested.
I spoke to him mostly about Fresh Hell
(which I love). We had our picture taken with him and Hallie Todd, and again he was great.
Maybe he was just in a good mood to be back with all his pals? He came out and heckled LeVar Burton from the guest microphone while he was onstage. It was hilarious.