Happy Days alums Scott Baio and Garry Marshall reunited on the former’s show Nick at Nite, See Dad Run, on Sunday.

Marshall guest-starred on See Dad Run as the TV dad of Baio’s character David, according to The Hollywood Reporter. In the episode, David’s dad Bernie leaves his baby with him before running off.

"I thought the whole week I would be so nervous in front of him. I wanted to be great in front of him, and I didn't want to blow it," Baio told THR. "But as soon as we started, it was the most relaxed I've ever been, and it was just so easy. And it was incredibly emotional, and I'm not really an emotional guy."

Baio, who was the one who suggested Marshall to See Dad Run’s producers, also managed to get Marshall's son Scott in the episode’s directors chair. He tweeted about the episode after it aired, complimenting Marshall and his son.

Baio joined the cast of Happy Days in its fourth season as Chachi. Marshall’s family comedy debuted in 1974 and ran until 1984 with Henry Winkler, Ron Howard, Marion Ross and Tom Bosley.

See Dad Run airs Sundays on Nick at Night at 9/7c.

– Chelsea Regan

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