Met
John McCarthy once when I was a freshman in Computer Science at NCSU. Dr. McCarthy is known as the father of Artificial Intelligence. A topic I was quite interested in when I was in college.
He came to give a talk and there was supposed to be a chance to "mingle" before hand. When I showed up there was no one there. A couple of minutes later a gentleman showed up and we started talking. Come to find out it was Dr. McCarthy. Apparently, the location or time of the meet-and-greet had changed and Dr. McCarthy and I were, it seems, the only ones to not get the information.
It was interesting as someone just starting out in Computer Science to speak with someone at the pinnacle of the field.
Had a class taught by
Marshall Brain. After teaching at NCSU, Marshall went on to found "How Stuff Works"; books and a web site that explains various topics in some detail. He later sold "How Stuff Works" to someone. I've seen it on cable TV afterwards kind of like the show "How's it Made?". He was an incredible teacher. His programming assignments were quite involved. Our final project was to code (from scratch) the Mac Paint program in Pascal on Apple Macintosh. He developed software that would take our compiled projects and run it through an emulator to determine the percentage of the project that we completed. He provided us with that program at the start of the project. He told us when we reached the grade we desired we could stop and submit our projects. That was the first (not All-Nighter) but "All-Weekender" I've ever pulled. Was up from Friday morning until the next Monday morning to finish up and turn that project in. (that was back when it was still fun)
Also, had a Discrete Mathematics class taught by
Donald Bitzer. Dr. Bitzer has done many things in his career. Among them, he is credited with the invention of the plasma display. He used to tell us about crawling into jets and installing early prototypes. He built them in his garage in a briefcase that he brought into class to show us. He was quite an interesting fellow and a great teacher. You wouldn't have known to look at him that his intellect was through the roof. He kind of looked like a pudgy 1950's stereotypical bowler; complete with the crew cut hair do and bowling shirts.
Edit: I just noticed. My idea of famous appears quite different from most of the other posts. I just haven't met many entertainers, I guess.