I guess the Muppets are branching out to match the likes of Princeton, Kate & Trekkie Monster:
My favorite quote from the article:
So does Henson, director of the Muppet Christmas Carol and Treasure Island movies, feel puppeteers around the world are trying to redress the balance so adults get a look in?
"Yes, absolutely," he said.
"The Americans are more action-oriented. They want to see the puppets beating each other up.
"British audiences are more intellectual. They like to see it sick and twisted, but in an intellectual way."