Lord of the Rings: The Return of the King - Amazing Disappearing Lembas Bread
When Gollom sprinkles the lembas bread on Sam on the ledge(just before Shelobs lair),the crumbs are visible on his shoulder. Then when Sam wakes up Frodo, the crumbs are gone, but when it shows Gollom, he says "Whats this?". When it shows Sam again, the crumbs reappeared!!!!