Black and white:
While Jacob's Nemesis explains his motivations to Ben, he leans infrequently back into the darkness and forward into the light cast by the hole in the roof of the statue base.
Kate and the marshall go through security at LAX at a booth labeled 4F. 4 is one of "The Numbers".
After Jin is taken for questioning about his undeclared cash, the female airport security guard refers to Sun as "Ms. Paik", not as "Mrs. Kwon".
The book that Hurley finds in the cave is a french version of philosopher Søren Kierkegaard's "Fear and Trembling"
The door to the stall Kate is in at LAX is the only stall with a hinge that allows the door to swing out (piano hinge along the outside).
When Sayid is removed from the spring, his hair is soaking wet. Just a few seconds later, when he's being laid on the ground, his hair is much drier.
Customs Officer: Anything to declare?
Marshall Mars: (Motioning towards Kate.) Just a murderer.
Boone: (to Locke) This thing goes down, I'm sticking with you.
Sayid: I've tortured more people than I can remember. I murdered. Wherever I'm going... it can't be very pleasant.
Sawyer: You think an atom bomb went off, we'd still be standing here?!
Jack: I don't know.
Sawyer: That's right! You don't! For once, you don't know!
Desmond: Nice to meet you, Jack... or to see you again.
Nemesis: Hello Richard. It's good to see you out of those chains.
Henry Ian Cusick (Desmond) is credited, but doesn't appear.
Original International Air Dates:
Canada: February 2, 2010 on CTV
United Kingdom: February 5, 2010 on Sky1/Sky1 HD
Portugal: February 9, 2010 on Fox
New Zealand: February 17, 2010 on TV2
Finland: February 25, 2010 on Nelonen
Norway: March 10, 2010 on TVNorge
Germany: March 24, 2010 on Fox
Sweden: April 7, 2010 on TV4
Czech Republic: April 12, 2010 on AXN
Fear and Trembling: The book found in the Temple is "Fear and Trembling" (original title: Frygt og Bæven), an influential philosophical work by Danish philosopher, theologian, and psychologist Søren Kierkegaard, published in 1843 under the pseudonym Johannes de Silentio (John the Silent). The title is a reference to a line from Philippians 2:12, "...continue to work out your salvation with fear and trembling."