What's more fun than one cute little frog starring in a Muppet movie? Two of them, of course! Kermit discovers that he has a twin who just happens to be a Russian criminal named Constantine. The only way you can tell them apart is that Constantine has a mole and a thick accent.
After closing down their movie set, the Muppets are ready for their next gig when they're approached by Dominic Badguy (Ricky Gervais) who wants to manage the group on a European tour. Kermit is suspicious of him, but the others decide its a good career move, so off they go.
While abroad, Kermit is mistaken for the evil frog and is arrested and shipped off to a Siberian Gulag guarded by Tina Fey. She has a love for Broadway shows and puts on song and dance routines starring the prisoners. Ray Liotta brings some laughs as one of the high-stepping criminals.
Constantine assumes Kermit's identity and with accomplice Badguy, they set about to rob famous places that are strategically located next door to theaters where the Muppets are performing.
A large cast of actors pop up throughout the film. Stanley Tucci is a Gulag tower guard and Ty Burrell is good as an Inspector Clouseau-type who fumbles the theft cases. They're just a couple of the many celebrity cameos.
A few Muppets get short shrift because of all the humans in the film. I'd like to have seen a bit more of Fozzie Bear or Gonzo, but Kermit and Miss Piggy both shine as the Muppet stars. And as far as Miss Piggy goes- if anyone can pick out the real Kermit, its Miss Piggy.
The musical numbers are funny, the songs are catchy, the actors are perfectly cast and best of all, the Muppets are as entertaining as ever.