Glenn Howerton

‘Velma’: Mindy Kaling & Team on Adapting ‘Scooby-Doo’ Characters (VIDEO)

‘Velma’: Sam Richardson, Constance Wu & More Join Voice Cast

‘It’s Always Sunny in Philadelphia’: See the Gang Get Wild in Ireland (VIDEO)

‘It’s Always Sunny in Philadelphia’ Landmark Season 15 Sets Premiere at FXX

Joe Manganiello Stops by ‘A.P. Bio’ in Season 4 First Look (VIDEO)

‘A.P. Bio’ Season 4 Trailer: A Shocking Kiss, the Dangers of Uniforms & Jack’s Father (VIDEO)

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Picture Day for ‘A.P. Bio’! Plus, First Look at the New Whitlock High Student

15 Standout Episodes From the First 15 Years of ‘It’s Always Sunny in Philadelphia’

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Brush Up on Your ‘A.P. Bio’ Before Class Is Back in Session (VIDEO)

FX Renews ‘It’s Always Sunny in Philadelphia’ for Record-Breaking 15th Season

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The ‘Always Sunny’ Gang Goes Film Noir in Black-and-White Episode (PHOTOS)

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WATCH: Jack Is Still Trying to Get out of Teaching (and Toledo) as ‘A.P. Bio’ Returns

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‘A.P. Bio’ Season 2 First Look: Glenn Howerton’s Teacher From Hell Is Fired Up! (VIDEO)

‘It’s Always Sunny in Philadelphia’ Re-Created an Iconic ‘Seinfeld’ Scene (VIDEO)

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‘A.P. Bio’: Glenn Howerton on How the Series Will Hint at Jack’s Softer Side (VIDEO)

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‘A.P. Bio’ Stars Glenn Howerton & Patton Oswalt on Why Teaching Is No Joke (VIDEO)

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Sneak Peek: Why NBC’s ‘A.P. Bio’ Is in a Class of Its Own (VIDEO)