Trivia: When Elrond is welcoming Frodo into Rivendell, a LEGO character can be seen in the background wearing a black suit and tie. The character is none other than Agent Smith from The Matrix. Agent Smith from The Matrix and Elrond were both played by Hugo Weaving.
Return Of The King, Level 4: The Battle Of Pelennor Fields - The orc army is approaching Minas Tirith at the start of the level clip. But as the "camera" pans around, half of the orcs literally disappear.