Philly pride runs strong, even for celebrities. The Welcome to Wrexham creator and Bradley Cooper are not the only famous guest stars to pay tribute to their roots in an episode of Abbott. Eagles football players Jalen Hurts and Jason Kelce also made cameos in Season 3, as Abbott ’s always one to cater to their PA fanbase.

Two comedy forces collided this week on Abbott Elementary, as the school staff welcomed the Paddy’s Pub gang from FXX’s It’s Always Sunny in Philadelphia. Did the crossover episode make the grade, though?

Charlie learns to read, Dee impersonates Ben Franklin, and Frank fights raccoons. We don't quite know what's up with Dennis though.

The "It's Always Sunny in Philadelphia" crew is headed to "Abbott Elementary" in the first of two crossover episodes. The highly anticipated crossover episode will see Charlie (Charlie Day), Mac (Rob McElhenney),

A crossover television event is always a thrilling prospect—not one, but two of your favorite shows coming together as one? There have been plenty of surprising combinations throughout the years: The Jetsons met The Flinstones,

Here's a look at our real-time thoughts on tonight's crossover between FXX's It's Always Sunny in Philadelphia and ABC's Abbott Elementary.

Abbott Elementary and It's Always Sunny deliver a hilarious crossover blending heartfelt humor with chaotic antics.

The collaboration commences with Season 4, Episode 9, of "Abbott Elementary," airing Jan. 8, and will continue with a follow-up episode of "It's Always Sunny in Philadelphia," expected to air in the show's upcoming Season 17.

A live TV streaming service that includes ABC in its channel lineup will do the trick. Hulu Plus Live TV and YouTube TV are among the options -- both start at $83 per month -- and you can stream the Abbott Elementary episode with Sling Blue if you're in a select city.

Go birds, indeed! We're giving the Abbott Elementary and It's Always Sunny in Philadelphia crossover episode on ABC an A+. Find out why in our review here!