My dad loves this one =p
From the OLD backstage tour at MGM, Rick Moranis overhearing the announcer: "Please stand clear of the automatic doors." "What automatic doors? *SLAM* oohh those automatic doors..."
I also like the Dinosaur pre-show, such as "Flash photography? I wouldn't. It interrupts the homing signal and THATS NOT GOOD."
I love that one from Dinosaur. I also think all the jokes on Jungle Cruise are great, especially "THE BACKSIDE OF WATER!"
The Tower of Terror opening video is great...it really sets the mood for the ride.
I can't believe I'm the first one to use this: "In the Tiki Tiki Tiki Tiki Room!"