Simpsons the movie - Spider Pig!

I´ve got big big biiiiiig expectations about this movie. I got this clip from my colleauge and we´ve been laughing at it since yeasterday. It´s so much Homer. Browse around at youtube and you´ll find more clip from the movie, and the pig is in some other as well. We´re a bit curious about the pig... where did Homer get it and whats so special about it.. well except for the fact that its a Spider Pig =)