Will Ferrell is desperately wanted for a guest star role on The Simpsons

Addressing Will, via People, Matt, 54, begged: "Come on, Will. We keep writing great stuff for you."

Many A-listers - including singers Sir Paul McCartney, 83, and Britney Spears, 44, music mogul Simon Cowell, 66, and the 79-year-old late Hollywood acting legend Dame Elizabeth Taylor - have been invited onto The Simpsons since the sitcom's debut in December 1989.

On December 14, 2025, actress Lindsay Lohan voiced an older version of Maggie Simpson - the youngest sibling of Bart Simpson (Nancy Cartwright), Lisa Simpson (Yeardley Smith), and child of Marge Simpson (Julie Kavner) and Homer Simpson (Dan Castellaneta) - in an episode titled Parahormonal Activity.

Lindsay, 39, was honoured to have been involved with The Simpsons, and hailed her role as a "dream come true".

Meanwhile, The Simpsons airs its milestone 800th episode, titled Irrational Treasure, this Sunday (15.02.26) on Fox.

According to IMDb, the episode sees "Marge's crusade to get Santa's Little Helper in better shape results in a trip to the National Dog Show in Philadelphia, where Marge and Homer find themselves - and their dog - mixed up in a historical conspiracy adventure".

Speaking about the idea of the plot for Irrational Treasure - which guest stars the likes of actor Kevin Bacon, 67, record producer Questlove, 55, and 36-year-old actress Quinta Brunson - Matt joked: "Luckily, I have the best writers in the world who think of things for me, and I can just take the credit."

He continued: "But they wanted to do a show, one of our funny travel shows set in Philadelphia.

"We wanted to do the show about the emotional rollercoaster of pet ownership. And they also wanted to do a show that parodied a National Treasure-type Jerry Bruckheimer adventure movie."

And Matt says one moment in the 800th episode stands out for him.

He explained: "The speech Marge gives at the end about the journey and the emotional toll of owning a pet.

"I think it's as good as anything that the show has ever done in the spirit of [show co-creator] James Brooks' harsh, tortured, real view of what it's like to be a modern, emotional person in modern times.

"So, as funny and silly as the speech at the end is, it's [also] a love letter to [James]. It's a love letter to the show. It's a love letter to pets. It's a love letter to Marge. I'm so proud of it."