Neither are known for their comedy roles. However, Williams cameos as herself in the forthcoming British remake of French comedy drama Call My Agent!, appeared in two episodes of Friends as Joey's love interest and briefly parodied her Sixth Sense performance in an episode of Spaced.
Sewell, arguably best known for playing John Smith, Nazi leader of America in alternative history drama The Man In The High Castle, did appear in the BBC's 1995 adaptation of Cold Comfort Farm and portrayed dissolute artist Declan Howell in the American comedy drama about a fictional stand-up, The Marvelous Mrs Maisel.
"If I had one thing I was good at, it would be comedy" he told America's National Public Radio in 2017. "I mean, beware of what actors say they like doing, obviously - it's not always a pleasure to watch people in their dream roles - but for me, it's the one thing that I like doing the most, and I'm probably the best at.
"So yes, actually, it's my bag completely, I just don't get to do it very often. Possibly because of my bone structure and hair colouring and previous casting."