CNBC’s Carl Quintanilla is joined by Emmy-award winning legend Henry Winkler to break down his final performance as acting teacher Gene Cousineau on HBO’s “Barry” as the series comes to a close. They discuss Henry’s sources of inspiration while playing the role of Gene, why he says writers are the "beating heart" of every project he’s worked on and how he maintains his “cool” nearly 50 years since his debut as The Fonz on “Happy Days.”