Making Gold Out of Nothing
It has been revealed that the pilot may have cost as little as $85 to shoot, being made out of two simple camcorders to film a 'day in the life' of Charlie Day, Glenn Howerton, and Rob McElhenney. The budget went almost solely to tapes for the cameras, which you can see in the low quality of the episode.
Creator/star Rob McElhenney and co-star Kaitlin Olson were married in September of 2008. This puts their wedding at around the same time as the air date for the beginning of the fourth season of "Always Sunny." They have two children, ages 2 and 4.
Just a Bunch of Jerks
According to Glenn Howerton, the show was originally to be about struggling actors in LA under the working title "Jerks". It seems like the theme stuck around for the actual show.
Charlie Day once called the show's opening credits sequence the cheapest credits ever. The scenes were shot by the guys on a simple drive around Philadelphia and the music they used was free since they got it from the public domain. Also, despite the series' "Sunny" title, the footage of the opening credits consists entirely of night time video of Philadelphia.
True Love is Possible
Charlie and the Waitress (Mary Elizabeth Ellis) are actually married in real life. She must take some sort of pleasure in cruelly rejecting Charlie season after season in the show, but it's nice to know that in reality some love stories can come true.
Making the Most of a Second Chance
It's Always Sunny in Philadelphia was almost canceled after its first season but was renewed at the last minute when FX executives decided to give it room to grow. According to Rob McElhenney, word of mouth on the show was good enough for FX to renew it. They made a wise decision as the show is now extremely popular.
Do It For the Kids
As part of their second chance, the President of the FX Network wanted to add a new character to the show. He was friends with Danny DeVito, so he decided to approach him to ask about joining. DeVito's children were big fans of the first season of the show so he decided to sign on for ten episodes. DeVito himself said, "I would only do it if the role felt organic to the show and if it was a character that I’d feel like I could really let my hair down, no pun intended, and allow myself to explore other avenues that were as raunchy or as ribald as I’ve done in the past" DeVito enjoyed being part of the show so much he became a regular member of the cast.
Big, Fat Mac
Prior to the 7th season, it was reported that Rob McElhenney had gained 50 pounds in the previous six months. McElhenney has stated that he noticed characters from other sitcoms get better looking as the series progress, but McElhenny wanted his character to do the opposite. He apparently also tried to get the whole cast to do it, but the rest declined.
Can't Stand Himself
Star Glenn Howerton was asked why his character was named Dennis, whereas Charlie Day and Rob McElhenney's characters are named after themselves. Howerton supposedly responded by saying that he wanted to distance himself from his character as much as possible. In a Reddit AMA, though, he did say that "Dennis is a great outlet for my really weird sense of humor," and, "I always knew he was [a sociopath], I just wasn't ready to go all the way with it at first. It's been fun to tease it out and let it build over the years.
Throne of Lies
Paddy’s Pub is supposed to be a traditional Philly bar somewhere in the south side of the city. In reality, the building used for the bar is not actually in Philadelphia. The location that’s used for the bar’s exterior is the Starkman Building in Los Angeles.
How Did He Pull THAT Off?
In the show, Rickety Cricket is played by actor David Hornsby. Cricket leads a terrible life, having transformed from a Catholic priest to a homeless crack addict and even had his throat slashed. In real life, though, Hornsby married to Bones’ hottie Emily Deschanel. How he pulled that off we may never know.