As I walked over, he glanced up from the Intellivision game he was playing. His distinctive Cheshire grin stretched from ear to ear. "Z!" he shouted. "What is up , amigo?" He stretched out his right hand and gave me five as I dropped onto the couch opposite him. Aech had started calling me "Z" shortly after I met him. He liked to give people single-letter nicknames. Aech pronounced his own avatar’s name just like the letter "H."