The 'Episodes' actor recently met the legendary musician and was left speechless when he began quoting lines from his hit comedy show, which also stars Matt Le Blanc.
Stephen explained: ''I was on 'Graham Norton' this week and Barry Manilow came over and started quoting 'Episodes' lines to me. And the idea that Barry Manilow knows who I am is incredible. It is a really bizarre thing.''
The 41-year-old star also won a role in critically acclaimed Hollywood movie 'Rush' - which starred Chris Hemsworth and Daniel Bruhl - because the film's director, Oscar winner Ron Howard, was a big fan of 'Episodes'.
He added: ''I did the film 'Rush' last year ... that was partly because Ron Howard watched 'Episodes' and loved it.''
While Stephen is enjoying his newfound fame following the show's success, he is pleased each season is relatively short because it allows him to take on a variety of other projects.
He told BANG Showbiz: ''The great thing about 'Episodes' is that it's two months of my year, unlike other American shows which require your whole year. My best friend Andrew Lincoln is in 'The Walking Dead' and it requires a whole year. 'Episodes', I love because it's two months ... it indulges my short attention span.''
Stephen's new film 'Postman Pat' is out now.
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