I got to meet him at Celebration VI in Orlando. I was both excited and nervous that I might catch him on an off day (or moment) and my childhood hero would be forever tainted from that point on. Thank God he was such a class act. Very gracious and polite. He was in "head down autograph mode" when my wife and I approached his table and all I could say was "It's an honor to meet you." That got him to pause, look right up at us where he thanked me and engaged in a fun little chat about my favorite Topps ESB cards and him remembering the specific sayings he would write back in the early 80's depending on the scene he was autographing.
I know there's wisdom in the saying "never meet your heroes" but thank God that wasn't the case with Mr. Luke Skywalker himself.