The Trope Namer

Indiana Jones and the Last Crusade is the Trope Namer, where the line gets used twice in the introduction, first as noted in the Page Quote (when Indy is a teenaged Scout) and later when Indy is a full-fledged adventurer. Both refer to the same object, the Cross of Coronado. Note that this example falls under both Don't Touch That MacGuffin (again, when Indy says it) and What a Piece of Junk (Panama Hat's retort).

Example of:
It Belongs in a Museum