It's Always Sunny in Philadelphia

What 'It's Always Sunny in Philadelphia' Is About:

Four friends in Philadelphia run a bar together. But these are no Friends; think more along the lines of the amoral and selfish Seinfeld foursome, with a dash of Gob from Arrested Development.

Pictures from 'It's Always Sunny in Philadelphia' :

Pictures of the cast of It's Always Sunny in Philadelphia

When to See 'It's Always Sunny in Philadelphia':

It's Always Sunny in Philadelphia airs Thursdays at 10:00 P.M. ET on FX. The show is currently in its third season. It originally premiered August 4 2005, and still in production.

Who's Behind 'It's Always Sunny in Philadelphia':

It's Always Sunny in Philadelphia is produced by:

• Jeff Luini (Dirt, The War at Home, Family Matters)
• Charlie Day (It's Always Sunny in Philadelphia)
• Glenn Howerton (It's Always Sunny in Philadelphia)
• Rob McElhenney (It's Always Sunny in Philadelphia)
• Nick Frenkel (It's Always Sunny in Philadelphia)

Who's Who in 'It's Always Sunny in Philadelphia':

• Charlie: Charlie is a perpetual loser who lives in a dingy apartment and works in the bar. Charlie is played by Charlie Day (Third Watch)
• Mac: Mac is always looking for the angle in any situation. Mac is played by Rob McElhenney (ER, Law and Order)
• Dennis: Dennis is vain and self-centered. Dennis is played by Glenn Howerton (ER)
• Dee: Dee is Dennis' sister. She is the bartender. Dee is played by Kaitlin Olson (The Drew Carey Show, Curb Your Enthusiasm, Who's Line is it Anyway?)
• Danny Devito: Frank is Dennis and Dee's estranged father, who moves to Philadelphia, buys into the bar and moves in with Charlie. Danny Devito is played by Frank (Throw Momma from the Train, The Simpsons, Taxi)