There's news from Muppet Central that the Muppets may well be coming back. A ten minute presentation pilot has been filmed and this could lead to a new series. What's being proposed is a mock documentary (ala "The Office") showing the Muppets trying to create a new show. It's a format I think would work really well.
The above clip really brings back memories. My older sister and I used to sit in the back of the car when we were kids singing Mahna Mahna. I imagine it drove my mother up the wall.
One of the very first jobs I had in animation involved working at the Henson studios in London one weekend. I was working at Passion Pictures at the time and we were told we would be working the weekend (to get a job finished). We were all a bit glum at the prospect, but the minute the production staff mentioned we'd be working at the Henson Creature Workshop in Camden, suddenly we were all incredibly enthusiastic. It was an amazing building stuffed with Muppets. The reception had display cases with Skeksis in them, one of the meeting rooms had Statler and Waldorf sat either end of a couch (so you'd sit between them). The workshops were full of animatronic creatures.
A year or so later I went there for a meeting along with Curtis Jobling to develop or pitch tv show ideas (I can't quite remember which). I remember sitting in a development meeting at one point with Rygel from Farscape sat at the head of the table. There were Muppets everywhere. I also pinched one of their coffee mugs which had Jim Henson Company written on it with a picture of Kermit, which they were perfectly happy for me to have, but, I think I would have been pushing my luck if I'd picked up Statler or Waldorf and stuffed them in my bag too.