It's Always Sunny in Philadelphia is back for season 17, and it's not the first show Glenn Howerton has been on this year. Check out his other hit.

It was the implication. Glenn Howerton, who stars as the sociopathic Dennis Reynolds in the long running sitcom “It’s Always ...

Fans of It’s Always Sunny in Philadelphia may have noticed a tribute to someone not involved with the series at the end of ...

Glenn Howerton addresses the ongoing 'It's Always Sunny in Philadelphia' fan theory about Dennis Reynolds being a serial ...

You can see Glenn Howerton in It’s Always Sunny in Philadelphia, which is now streaming with a Hulu subscription. The show ...

It's Always Sunny In Philadelphia almost lost one of its main and important cast members after its eleventh season, and fans ...

It’s Always Sunny in Philadelphia Season 6 Episode 3, titled The Gang Buys a Boat, portrays one scene which eventually ...

Glenn Howerton revealed during PaleyLive's panel for the 20th anniversary of 'It's Always Sunny in Philadelphia' that he ...

Howerton co-created It’s Always Sunny with co-star Rob McElhenney, reuniting in Season 17, which premieres July 9 with ‘The ...

For a legendary television show that was initially thought to be a short film shot on a digital camcorder by Rob McElhenney, ...

Plus, Charlie Day and Glenn Howerton tell TheWrap which other sitcom they'd love to cross over with after "Abbott Elementary.

In Wednesday's Season 17 premiere episode of "It's Always Sunny in Philadelphia," the "Abbott Elementary" cast gets to cuss — ...