To prepare for her role in the series, Claire Danes met with CIA officers, and also watched videos made by bi-polar disorder patients and consulted with author Julie Fast who suffers from the same disorder.
Although Carrie's condition was not specified during the show's first few episodes, the actor who plays her, Claire Danes (who considered majoring in psychology at Yale) told "Entertainment Weekly" that she decided that Carrie has Bipolar 1.
British actor Damian Lewis landed the lead role without an audition. The series producers Howard Gordon and Alex Gansa were so impressed with his performance in the under-rated Keane, they offered him the part over the course of a phone call.
The American series is based on an Israeli drama series called 'Hatufim' (Hebrew for 'Abducted' or 'Kidnapped'). Gideon Raff created the original series in response to the many Israeli soldiers who had been enemy captives and their brutally difficult, and largely unreported, efforts to reintegrate into Israeli society after they returned home. One of the major differences between the Israeli and American series is that the U.S. does not conduct prisoner exchanges with enemies, so Sgt. Brody was returned to the U.S. after being rescued by a military team.
Abu Nazir's son is called Isa. Arabic-speaking Muslims refer to Jesus as Isa.
Morena Baccarin (Jessica) said in an interview that she and Claire Danes (Carrie) attended the same Junior High School together and were even in the same homeroom for much of that time.
In a New York Times interview, Alex Gansa said that there was a line item in the season 2 production budget to digitally erase Claire Danes's pregnant midriff in some shots.
In a December 2012 New York Times interview, Howard Gordon explained why Jessica calls her husband "Brody," his last name, instead of his first name, "Nicholas," or any nickname form thereof: "It's something that's been in their relationship from the very beginning and speaks to the love between them. We've heard from many military families, and it's not that uncommon a practice."
Claire Danes stated in an interview that writer Meredith Stiehm was deeply involved in writing the character of Carrie, not only because Stiehm was the only female writer on the show but also because her sister suffers from Bipolar disease.
The homecoming scene that takes place at Joint Reserve Andrews was filmed at Charlotte Douglas International Airport. The first fighter jet shown is part of the military aviation museum there.
SPOILER: The words that Saul mutters after Afsal Hamid dies are from the Mourner's Kaddish, one of the central prayers of Judaism. It is recited as a sign of respect in memory of the recently deceased, at funerals, on the anniversary of a deceased loved one's death, and as a part of the standard Jewish religious service. It is also recited for people who die without anyone else to mourn them. The word "Kaddish" means "sanctification," and the prayer is entirely made up of praises for God; there is no mention of death anywhere in it. Parts of the prayer are inspired by passages from the books of Ezekiel and Daniel. Though most prayers in Jewish liturgy are in Hebrew, the Kaddish is actually in Aramaic. (See also the Trivia section for "Angels in America.")
While walking through the woods, Carrie says she and her sister used to play Lewis & Clark, and specifies that she always wanted to be Lewis. Meriwether Lewis is presumed to have suffered from a bipolar disorder just like Carrie.
The 'Heritage Diner' where the Brody family eats (and the local man tells Nicholas that he'll vote for him) is actually J. J. Wasabi's in Mooresville at the corner of Moore Avenue and Main Street, just as shown on-screen.
During the discussions among the CIA Saul mentions about the Mumbai attack. The Mumbai attack he is referring to is the 26/11 attack carried out by terrorists on Taj Hotel in Mumbai. It took place in the year 2008 and involved many civilian casualties.
This episode was originally titled "The Motherf**ker With the Turban", a riff on the title of the play "The Motherf**ker With the Hat" by Stephen Adly Guirgis.
Scribbled on Carrie's notebook, seen during her Congressional hearing, are the words "You killed my son - prepare to die." This echoes the famous line "You killed my father - prepare to die!" uttered by Mandy Patinkin in the film The Princess Bride. Patinkin plays one of the lead roles on Homeland.