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The Best Episodes of It's Always Sunny in Philadelphia Season 5

Every episode of It's Always Sunny in Philadelphia Season 5 ranked from best to worst. Discover the Best Episodes of It's Always Sunny in Philadelphia Season 5!

Binge this in 4h 14m·Peaking at 9.3/10
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Episode Rankings

  1. #1 Fan Favorite
    It's Always Sunny in Philadelphia Season 5 Episode 10 - The D.E.N.N.I.S. System
    9.3/10(5828 votes)

    S5:E10

    Dennis reveals his foolproof system for seducing any woman to the rest of the gang, but they don't grasp the concept.

    Director:Randall Einhorn
    Writers:Rob Rosell, David Hornsby, Scott Marder

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  2. It's Always Sunny in Philadelphia Season 5 Episode 2 - The Gang Hits the Road
    9.1/10(4965 votes)

    S5:E2

    The gang tries to expand their horizons by going on a road trip to the Grand Canyon.

    Director:Fred Savage
    Writers:Glenn Howerton, Charlie Day

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  3. It's Always Sunny in Philadelphia Season 5 Episode 8 - Paddy's Pub: Home of the Original Kitten Mittens
    8.9/10(4330 votes)

    S5:E8

    The gang decides to expand their business by developing a number of products that they could sell at Paddy's pub.

    Director:Randall Einhorn
    Writers:Lee Sung Jin, Patrick Walsh

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  4. It's Always Sunny in Philadelphia Season 5 Episode 5 - The Waitress Is Getting Married
    8.8/10(4193 votes)

    S5:E5

    The waitress is getting married, Dee is jealous that she's beating her to the altar, so she tries to derail the wedding.

    Director:Fred Savage
    Writers:Glenn Howerton, Charlie Day

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  5. It's Always Sunny in Philadelphia Season 5 Episode 4 - The Gang Gives Frank an Intervention
    8.7/10(4293 votes)

    S5:E4

    Frank's behavior is more bizarre than usual---so bizarre that even the gang notice---so they decide to stage an intervention.

    Director:Fred Savage
    Writers:Rob Rosell, Scott Marder

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  6. It's Always Sunny in Philadelphia Season 5 Episode 7 - The Gang Wrestles for the Troops
    8.5/10(3929 votes)

    S5:E7

    The gang puts together a wrestling show for returning troops. Meanwhile, Dee finally meets the soldier that she has been communicating with over the internet.

    Director:Randall Einhorn
    Writers:Rob Rosell, Scott Marder

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  7. It's Always Sunny in Philadelphia Season 5 Episode 9 - Mac and Dennis Break Up
    8.5/10(3798 votes)

    S5:E9

    Mac and Dennis decide that they need to spend some time away from each other. Meanwhile, Charlie helps Dee search for her cat.

    Director:Fred Savage
    Writers:Rob Rosell, Scott Marder

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  8. It's Always Sunny in Philadelphia Season 5 Episode 12 - The Gang Reignites the Rivalry
    8.5/10(3625 votes)

    S5:E12

    After being banned for 10 years from a local drinking competition appropriately named "Flipadelphia," the gang tries to reignite their old rivalry with another local bar. Finding that they are in need of some serious practice, the guys head to Dennis' old fraternity house at the University of Pennsylvania to get their game up to speed while Dee hones her skills on her own. Frank wears skinny pants.

    Director:Randall Einhorn
    Writers:Charlie Day, Dave Chernin

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  9. It's Always Sunny in Philadelphia Season 5 Episode 1 - The Gang Exploits the Mortgage Crisis
    8.3/10(3891 votes)

    S5:E1

    Dennis, Mac, and Frank go into real estate, while Dee sets out to be a surrogate for a wealthy couple. Charlie gets into it with an attorney over the law.

    Director:Randall Einhorn
    Writers:Audra Sielaff, Becky Mann

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  10. It's Always Sunny in Philadelphia Season 5 Episode 6 - The World Series Defense
    8.3/10(3592 votes)

    S5:E6

    The gang describes the trials and tribulations they went through, during game five of the World Series, in hopes the judge will clear them of all the citations they received.

    Director:Randall Einhorn
    Writer:David Hornsby

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  11. It's Always Sunny in Philadelphia Season 5 Episode 3 - The Great Recession
    8.0/10(3568 votes)

    S5:E3

    With a shantytown taking shape outside, Mac and Dennis try to keep Paddy's going in tough times. Meanwhile, Frank and Dee start a family business.

    Director:Fred Savage
    Writer:David Hornsby

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  12. It's Always Sunny in Philadelphia Season 5 Episode 11 - Mac and Charlie Write a Movie
    8.0/10(3463 votes)

    S5:E11

    When Dee gets a part in the new M. Night Shyamalan film, Mac and Charlie seize a chance to pitch their movie script.

    Director:Randall Einhorn
    Writers:Glenn Howerton, Rob Mac

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Season 5 Ratings Summary

"The D.E.N.N.I.S. System" is the best rated episode of It's Always Sunny in Philadelphia season 5. It scored 9.3/10 from 5,828 votes. Directed by Randall Einhorn and written by Rob Rosell, David Hornsby, Scott Marder, it aired on November 19, 2009. This episode is rated 0.2 points higher than the second-best, "The Gang Hits the Road".