As children, Kate and Tom buried their time capsule on August 15th, 1989, or 8/15/1989. The plane that crashed in the pilot was flight 815, and 8 and 15 are two of "Hurley's numbers."
In the previous episode "The Greater Good", Jin's handcuff on his left hand had mysteriously disappeared. It has reappeared in this episode.
Inside the New Kids on the Block lunchbox Kate and Tom dig up is, among other things, a cap from the Westhills Baseball Club, a non-profit community baseball club in Los Angeles.
Charlie's song title "Monster Ate The Pilot" is a reference to earlier events, when an unknown force killed the pilot of Oceanic Air 815.
Also in Kate and Tom's childhood treasure box is a Minnie Mouse figure, as seen later in the backseat of Tom's car. ABC, which aired Lost, is owned by Disney.