"It's where I got my start," John told Jonathan as the two were interviewed by Access Hollywood's Billy Bush on Friday in New York City. "I wouldn't be sitting here next to you today if it weren't for 'Welcome Back, Kotter.'"
Jonathan, who grew up in Ireland, hadn't heard of the series, but listened attentively as John reminisced about his early days as an actor.
"75… I was 21… I got the pilot," John recounted. "Then you have to wait. You have to wait three months with baited breath and then they finally let you know [if the show gets picked up].
"When we [were paired] with 'Happy Days.' I knew we were an automatic hit," he added.
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