Spongebob squarepants has some super crude and funny stuff in it that is mostly over kids heads. Its actually pretty funny.
I turn on Boomerang all the time with the kids so I can enjoy the old school cartoons that I used to watch growing up. The incredibly strange thing is that they are all so violent compared with recent cartoons. Tom and Jerry, Bugs Bunny, etc - they were always beating on each other and stuff...
The kids mostly watch anything PBS Sprout or Noggin throws at them. I enjoy watching Viva Pinata on Saturdays with them. The kids LOVE that cartoon. I also find it hilarious at times. "Shake it, shake it, like a party animal" The kids actually stand up and bust some moves to that.