Why are there so many movies -- and trailers -- about muppets?

Fans of Jim Henson's furry family last saw them on the big screen in 2005's bizarre Muppet version of 'The Wizard of Oz,' co-starring Ashanti.

Since then, 'How I Met Your Mother' star Jason Segel has written his take on the genre, and it'll soon be time to play the music, and light the lights! The new plot has the old gang reuniting to save the old Muppet Theater, singing new music by Bret McKenzie of 'Flight of the Conchords.'

Co-starring Oscar nominee Amy Adams, 'The Muppets' will open Nov. 23.

A series of mock trailers (check out 'Green With Envy') have already been released, and although the official trailer for 'The Muppets' wasn't due to go public until Monday, the full clip surfaced online over the weekend.

Highlights include Miss Piggy in full diva mode, Fozzy Bear in shoes that fart (yes, that's right), an inevitable road trip and a very unfortunate muppet electrocution scene. All for laughs, of course.