Trivia for
"It's Always Sunny in Philadelphia" (2005) More at IMDbPro »

• The pilot was created by three Hollywood actors about struggling as actors in LA, and the show was initially titled, "It's Always Sunny on TV". The original, unaired pilot only cost $200 to make and was shot on digital camera. It was then shopped around to different networks and was picked up by FX. They then moved the setting of the show from LA to Philadelphia and re-shot the pilot.
  
  
• Each episode ends with the RCH production logo, with the actors in hoodies with a sound clip played backwards: * In Season 1, when this is played forward it says "You are stupid for playing this forward." At the end of the first-season finale "Charlie Gets Molested", the message had an echo. * In Season 2, when this is played forward it says "Is it brown? Is it brown? Is it brown? Good work. Is it brown? Is it brown? Is it brown? Good work." * In Season 3, when this is played forward, it says "Make it brown, Make it brown, make it brown, Make it brown!" in a cappella for the first three "Make it brown"s by each actor, and then in unison for the fourth and final "Make it brown".
  
  
• Danny DeVito was only available for 20 days of shooting for all of season two.
  
  
• The original title for "Hundred Dollar Baby" was scheduled to be "Sweet Dee Takes Steroids," but it was changed to be a play on words of the movie, Million Dollar Baby (2004).
  
  
• Charlie's "war hero" costume in the episode "Charlie Gets Crippled" is based on famed Vietnam war protester and writer Ron Kovic.
  
  
• Charlie (Charlie Day) and the Waitress (Mary Elizabeth Ellis) are married in real life.
  
  
• Was almost canceled after its first season but renewed at the last minute when FX executives decided to give it room to grow. Ironically, it is now one of the highest rated and most popular shows on the channel.
  
  
• As of season five, Mac's first name is still unknown, and the Waitress' real name has never been revealed, either.
  
  
• According to creator/star Rob McElhenney, Charlie's 'Green Man' character is actually a homage of a friend who used to dress in a green body suit after Eagles games.
  
  
• Jimmi Simpson (Liam McPoyal) came onto the series because he was friends with star Charlie Day.
  
  
• As of 2008, David Hornsby, better known as 'Rickety Cricket' on the show, has directed 10 episodes of the series.
  
  
• The show was almost canceled during the first season of shooting. The President of FX asked to add a new character and is friends with Star Danny DeVito so they decided to approach him to ask about joining. His children were big fans of the first season of the show so he decided to sign on for ten episodes. DeVito enjoyed being part of the show so he became a regular member of the cast. He has been part of the show since season 2.
  
  
• During a convention interview, star Glenn Howerton was asked why his character was named Dennis, whereas Charlie Day and Rob McElhenney's characters are named after themselves. Howerton responded by saying that he wanted to distance himself from his character as much as possible.
  
  
• The show's original pilot was a short film version of the episode "Charlie Has Cancer." The story was later reused in the series.
  
  
• According to Glenn Howerton, the first working title for the show was 'Jerks.'
  
  
• The show's budget was originally very limited so much of the music featured on the show is public domain, including the theme music, "Temptation Sensation" by Heinz Kiessling.
  
  
• During the development of the series, the writers were offered $500 to come up with a title for the series that the creators liked better than 'It's Always Sunny in Philadelphia.' The title remained unchanged.
  
  
• Creator/star Rob McElhenney and co-star Kaitlin Olson were married in 2008.
  
  
• The exterior used on the show for Mrs. Mac's house is actually next door to creator Rob McElhenney's childhood home in Philadelphia.
  
  
• The Philadelphia landmarks seen in the series' opening credits montage are the Benjamin Franklin Bridge, Penn's Landing on Market Street, Lincoln Financial Field, Swann Memorial Fountain in Logan Circle, Boathouse Row, 30th Street Station, and South Street Philadelphia.
  
  
• Charlie Day once called the show's opening credits sequence the cheapest credits ever, saying they literally shot the montage footage on a digital camera while driving around Philadelphia one night.
  
  
• Friends of the cast often play bit parts on the series.
  
  
• The clothing Rob McElhenney and Kaitlin Olson frequently wear on the show is designed by a clothing company called Suburban Riot, owned by friends of the two stars.
  
  
• During its first two seasons, the series was one of the lowest budgeted series on television. Since then, the budget has increased with the show's growing popularity.
  
  
• Despite the reports that the show's pilot was shot for $200, it has actually been revealed that the pilot may have cost as little as $85 to shoot. The budget went almost solely to tapes for the camera.
  
  
• Since Danny DeVito was only available for 20 days for shooting during season 2, the production crew had to work on all 10 episodes of the season at once, often shooting scenes from multiple episodes in one day.
  
  
• The episode "The Gang Cracks The Liberty Bell" was inspired by a historical tour of Philadelphia that the cast went on.
  
  
• According to creator Rob McElhenney, the name 'Sweet Dee' was the nickname of one of his friend's girlfriends. He liked the nickname and later thought of it while creating the character of Dennis' sister.
  
  
• Originally, season 4 was to include an episode entitled "Frank Exploits the Mortgage Crisis." Due to Danny DeVito's limited availability, the episode had to be held off until season 5.
  
  
• In an interview, star Kaitlin Olson said she broke her back during an accident in the summer of 2008. She was still recovering during the shooting of season 4, which caused an episode where Sweat Dee falls down a flight of stairs to be pushed back to season 5. Olson said she felt it wasn't a smart idea to do the stunt while recovering from a broken back.
  
  

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