I'm already massing quite a collection of Spongebob Squarepants stuff (including men's boxer underwear), and hopefully down the road that stuff will really go for some bucks on e-bay.
What I love about the cartoon is that it harkens back to the classic Warner Bros. animations of the 40's and 50's (Bugs; Daffy; Elmer; Porky; etc.) with a great deal of subtle and not-so-subtle "adult" humor (although since kids, and I mean elementary age, are more "sophisticated" these days, they're probably picking up a great deal of it). One scene that had me on the floor was when Sandy the Squirrel was going crazy trying to find Spongebob, thinking he had vanished by some dastardly method when all he was doing was trying to hide from her. She's running from house to house, pulling them off their foundations and looking inside, and as she does so to one, there's an adult (a fish, of course) male inside, dressed up like a kid sitting on a tricycle, quite obviously indulging in some sort of secretive fetish. Embarrassed at being caught, he stammers: "Um....I can explain this." I thought I was gonna die.
Gerard (Who remembers when one of the classic Warner Bros. '40's cartoons made reference to "The Bird", and it was THAT bird, and somehow got away with it.)