you talk about chuck cunningham from "happy days." he went upstairs and never came down.down the aisle in the wedding and disappeared, and no one explained. what happened to these people? >> on hour-long dramas people get killed off all the time. i was on "law and order criminal sdwrint intent" and blew up in a car. and "game of thrones," 70% of the characters get killed off. that's an actual statistic. in the sitcom universe, people don't die generally. talk to henry winkler about what happened to richie cunningham's older brother, chuck cunningham, who was in the first few seasons of "happy days." >> bouncing a ball. >> he would usually be -- dribbling a basketball or eating a sandwich. and garry marshall was so good at what he did, the creator of "happy days," he decided the fonz was becoming so popular, richie cunningham would go to the fonz for advice on dating. so the fonz became the older brother. and rather than making chuck cunningham's disappearance a plot point, he knew that the audience would suspend disbelief enough to just be okay with him just -- just disap