It's Always Sunny Season 18 Review: Craziest Cameos & Twists Ever! (2026)

It's Always Sunny in Philadelphia has been a beacon of absurd comedy for over two decades, and its 18th season is no exception. This show has consistently delivered nonsensically hilarious stories, blending elements of South Park and Seinfeld with a unique brand of pitch-black humor. What makes this season particularly fascinating is the way it embraces the surreal and strange, even as the main quartet of Rob Mac, Charlie Day, Glenn Howerton, and Kaitlin Olson have reached the age of 50, while Danny DeVito is now in his 80s. In my opinion, the show's ability to remain fresh and relevant despite the cast's aging is a testament to its enduring appeal and the creators' commitment to pushing boundaries.

One thing that immediately stands out is the show's willingness to revisit themes, characters, and jokes from previous seasons. This approach, while not entirely original, allows the show to maintain a sense of continuity and familiarity for its dedicated fans. Season 18 picks up with the nuptials of Frank (Danny DeVito) and Sam (Carol Kane), which does not go the way you would think, and crosses over a couple of episodes before shifting to stories involving artificial intelligence, neurodiversity, renaissance fairs, little league teams, conspiracy theories, and Jamiroquai. This combination of plots, while odd, is a perfect example of the show's ability to blend the absurd with the relatable.

The show's ability to mix things up with musical episodes, relevant episodes tied to social movements like the Me Too movement, Black Lives Matter, gun control, racism, and drugs, and unexpected twists and celebrity cameos, is truly remarkable. What many people don't realize is that this show has become a cultural phenomenon, with its unique brand of humor resonating with audiences of all ages and backgrounds. The show's creators have consistently delivered on their promise of providing nonsensically hilarious stories that are often ripped straight from current events, making it one of the funniest and most enduring comedies on television.

In terms of the cast, it's impressive that they continue to make time to reunite for new seasons, even as they pursue other projects. The only cast member with writing credits this season is Charlie Day, but the lack of episodes written by Mac or Howerton does not detract from the quality of the entries, which all work consistently better than the last few seasons have. The directors, Heath Cullens, David and John Chernin, Richie Keen, and Todd Biermann, all keep the trademark tone and style of It's Always Sunny in line with prior seasons, ensuring that every episode is a blast to watch.

From my perspective, It's Always Sunny in Philadelphia remains one of my favorite sitcoms and an easy and hilarious series to watch at any time. The show's ability to remain fresh and relevant despite the cast's aging is a testament to its enduring appeal and the creators' commitment to pushing boundaries. I had the privilege of binging the new season, but getting new chapters weekly for the next few months certainly ranks as worthy destination viewing. This series could go on forever, and if Mac, Day, Howerton, Olson, and DeVito are able to have fun with it, we will continue to enjoy it from our side. This eighteenth season feels as fresh as the first, and I hope this show never goes off the air.

It's Always Sunny Season 18 Review: Craziest Cameos & Twists Ever! (2026)
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