You can also find instructions for easter eggs here.

I almost played that Jack Black bit with my daughters (11 and 8) in the room...wife caught me just in time. I try not to be too uptight about these things with my kids, but that one will have to wait until they're a little older (I am dreading the teenage years).

Have you seen the one with Gollum accepting the MTV award on TTT EE? An absolute riot.