Many DVDs have hidden features that can only be accessed through strange key-combinations or DVD reauthoring software. So, how many have you found? Which are your favorites?

So far, i've found:
Ikki Toussen (Out-takes/What the narrator said vs. what he was thinking)
Wandabba Style (FAR OUT ecchi out-take reel)

Im just really bad at these I cant often find them when told!

Cardcaptor Sakura DVD: "Not Gonna Take It Anymore" Music Video