I don't remember him as I am too young, but I do recall him from studying but never implementing telecom exploits. Yes free long distance calls were possible, but that was not the fun part of it. The fun part is you actually told the switches how to route your call. I read a story about how somebody used a blue box (tool used for this), to call the payphone next to him (they always used payphones to avoid getting caught), by routing his call around the world. In order for AT&T to kill this exploit they had to convert to out-of-band signaling, which resulted in today's digital telecommunications switches.
I am too young to remember him in the news or anything. But I do know of him. He used a whistle that was a prize in a Captain Crunch cereal box, it just happened to be at the frequency 2600hz. He is friends with Steve Wozniak (The Woz) who is the co-founder of Apple computers.
-W2FCP, Michael White
USAF, MSgt, Retired
VFW , IAVA