SilverWook said:

If you ever saw the Muppets that were on Saturday Night Live the very first season, you've glimpsed Jim Henson's darker comedy side. ;)

Yeah, to be honest I didn't really like those either. From what I've read, Jim's people weren't allowed to write for those sketches, only the SNL writers, all of whom hated the Muppets.

Puppets cursing and making sex & drug refs is only funny for about a couple minutes. Then it gets old real quick.

What Jim Henson did with the Muppet Show and George (and his people) did with the OT was quite ingenious on how they were able to entertain people of all ages without scraping the bottom of the barrel. Today's type of "all-ages" entertainment is sloppy, juvenile storytelling with a few veiled sexual innuendos or pop-cultural refs.