Hurley: (about telling Rose about the hatch) It's cool; she won't tell.
Rose: Honey, I don't even know what I would say.

Johnny calls Hurley "Ponyboy", which is the name of a character from S.E. Hinton's novel, The Outsiders.

Sawyer: Right now, Rambina and her buddies are trying to figure out what to do with us, so until they make up their damn mind there ain't nothing we can do!

Rambina is the feminization of the name Rambo. It is a reference to John Rambo, the titular character of the Rambo movies, played by Sylvester Stallone.