In 2002, I was an undergraduate in mathematics at UCSD. I had taken Fan Chung's graph theory class and was captivated. I asked her if I could help with any projects, said I knew perl and python. She handed me off to a graduate student who ask me to build a web crawler. They wanted to analyze the www graph. I was introduced to Ron in the hallway by Fan. I knew of him - he was one of the most famous professors in the department. I was honored to shake his hand. I never made much progress on the www crawler. I regretted my laziness later in my subpar grad school.
That's all. Just a small memory from a random person.