Although Libby isn't the first character to be shown as a passenger of Oceanic 815 in the original timeline but not in the alternate timeline (Shannon was), she's the first one to appear.
The Mexican restaurant where Hugo is meeting his blind date is called Spanish Johnny's, and the name of the girl he is supposed to meet there is Rosalita. Both names are references to characters in songs by Bruce Springsteen, from his 1973 album The Wild, The Innocent and the E Street Shuffle (Incident on 57 Street and Rosalita). Writer Adam Horowitz is a well-known Springsteen fan.
When Hurley is eating tortilla chips in the Mexican restaurant the chip in his hand changes size.
Similar to Desmond's experience in "Happily Ever After", Hugo is recalling future events from the original timeline. While it is unclear how many days have passed since the landing of Flight 815 on Wednesday, 22 September 2004 Hurley did not meet Libby before Day 48 on the Island in the original timeline and their planned first date was to take place on Day 64 - Wednesday, 24 November 2004.
According to Jorge Garcia, the baby photo shown in the montage was actually him as a baby.
Desmond's license plate reads 4PCI264 while pulling into the school, but reads 2FAN321 when he speeds to run down Locke.
The boy in the jungle in this episode has dark hair as opposed to the blond in "The Substitute".
Jorge Garcia's real life dog "Nunu", appears in one of the pictures with Hugo during the montage at the beginning of the episode.
Dr Chang appears almost identical to his 1977 incarnation, despite the story being set in 2004.
When Hurley is laying out the blanket for his date with Libby, the sun is directly overhead. However, when the blanket falls on the ground, Hurley and Libby are no longer in direct sunlight.
Desmond has the order number 42 at Mr. Cluck's.
When Hugo and Libby are talking at Santa Rosa, in the background a patient is playing Connect Four.
Hurley: Dead people are more reliable than alive people.
This is director Daniel Attias's first episode since Season 1's "Numbers", which was also Hurley-centric.
Michael appears for the first time since "There's No Place Like Home, Part 3", a gap of 28 Episodes.
Despite being credited in the press release, Archie Ahuna (Tito) does not appear.
Though credited, Daniel Dae Kim (Jin) does not appear in this episode.
Emilie de Ravin (Claire) appears but without speaking lines.
Original International Air Dates:
Canada: April 13, 2010 on CTV
United Kingdom: April 16, 2010 on Sky1
Spain: April 20, 2010 on FOX
Australia: April 21, 2010 on 7TWO
Portugal: April 21, 2010 on FOX/FOX HD
Latin America: April 27, 2010 on Canal AXN
Finland: May 6, 2010 on Nelonen
Norway: May 19, 2010 on TVNorge
Germany: June 2, 2010 on FOX
Sweden: June 16, 2010 on TV4
Czech Republic: June 21, 2010 on AXN
A Hurley-centric episode.
DC Comics: Hugo asks Libby about this "bizarro alternate universe" she talks about. "Bizzaro World" is an alternate version of Earth in the DC comics (Superman) universe. It has all the same people as the original Earth, but everyone acts opposite of how they act on the original Earth.
Seinfeld: As Hurley exits the award ceremony with his mother, he notes that the next award ceremony he will attend is that of the Human Fund, a reference to a fake charity that George Costanza creates in order to "donate" holiday presents in lieu of giving gifts to his colleagues.
Notes from Underground (Записки из подполья): After Ilana's death, Hurley picks up a Russian-language copy of this 1864 novel by Fyodor Dostoyevsky.