Goof: When Buck turns to punch the camera at the end of the scene, the camera moves without him even picking it up. In one shot he is sitting talking to it, the next it has moved elsewhere in the room somehow.
Music: "Take It Back" by The Barenaked Ladies, "Fine is Fine" by Peasant
Nicknames: Moosh (Marshall) by Kate
Music: "Lucky" by Kat Edmonson
Tara believes that Alice plays the piano.
Nicknames: Kitty (Kate) by Gene
Goof: When Charmaine has the waiter pour her wine, he finishes pouring once. The shot goes to Tara and then it goes back to Charmaine and the waiter finishes pouring again.
Buck believes she fought in the Vietnam War.
Music: "Flyswatter" by The Eels, "Do You Inspire You" by Chairlift
Alice believes she attended Radcliffe Institute for Advanced Study at Harvard University.
Nicknames: Marshie (Marshall) by Max
T is a vegetarian. Buck is the only alter that is left-handed.
Nicknames Given by T/Tara/Buck: Night Marsh/Peach Fuss/Marsha/Doris Day (Marshall), Maxi-Pad (Max), Leather Tit (Charmaine), Bonehead (Kate)
The book that Marshall is reading when Tara walks in is "Sybil", a true story about a woman who had 13 different personalities. He hid the book in order to not offend his mother. Also, the book that Marshall is reading at the gun range is "Valley of the Dolls".
The two songs in the episode are by the American rock band Eels. Mark Oliver Everett's (also known as E, the lead singer of the band) father was a quantum physicist who proposed a theory of quantum mechanics that predicts the existence of parallel universes (and had a history of mental illness). The Eels are also thought to be a pretty quirky band themselves. The two songs are "Love the Loveless" and "Souljacker Part 1".