Cartoons some that push the boundaries of what is acceptable for Saturday mornings. Do cartoons still play on Saturday mornings? Whatever the case, this cartoon series didn't push the boundaries. No, the makers of the the duo Ren and Stimpy didn't seem to know there were any rules...or that there were kids watching. The show's creator John Kricfalusi produced the show for Nickalodeon which premiered in 1991. He continued making classic after classic for only a couple years before being fired. After which the shows changed and were a considerable down grade. Those first Ren and Stimpy years though, are now classics. Check out the "Top 5 Ren and Stimpy Moments" from Metacafe