I found these on Youtube the other day. I've never seen these videos before. Seeing this stuff just makes me appreciate puppetry and animatronics even more. I'd love the studios to revert back to the old movie making methods.
Slimer
http://uk.youtube.com/watch?v=76irW3s7_-k&feature=related
Stay Puft Marshmellow man
http://uk.youtube.com/watch?v=ljvcaPDpO8E