Kermit has a doppelgänger. And he is dastardly! Therein lies our PG-rated story. (I think the rating is based on some subtle sexual references, but later, we couldn't recall what they were.) The only thing that distinguishes Kermit from his nemesis Constantine, is a wart on the bad guy's upper lip. That, plus the Russian accent....

As you probably know, The Muppets can invite an astonishing number of name brand performers to one of these capers. In this one, if you recognize one familiar face, you'll see 30 more! I am in bewildered awe that so many performers (on both sides of The Pond) seem delighted to provide cameos for these fuzzy folks. I could easily name scores of actors I recognized without breaking a sweat. We have seen them in everything from "Downton Abbey" to "Machete." What fun!

Along with the familiar voices of our favorite characters, here are a few of the guest celebrities we enjoyed:

• * Ty Burrell ("Modern Family") is Jean Pierre Napoleon, an Interpol agent who is determined to bring Constantine, The World's Most Dangerous Criminal to justice, so long as it's BEFORE his American counterpart!
• * Ricky Gervais ("The Invention of Lying") is Domenic Badguy (pron. "Bah ghee" it's French), Constantine's evil sidekick (his "Number Two." Maybe THAT's the reason for the PG rating. ...smile...).
• * Tina Fey ("30 Rock") Nadya makes "Siberia" rhyme with "superior." She enlists her prisoner Kermit to bring some class to her Siberian prisoners' annual musical. She LOVES Broadway!
• * Christoph Waltz ("Django Unchained") as himself, dances with a Muppet. What kind of dance you may ask? Yup! A Waltz!
• * Salma Hayek ("Grown Ups") as herself. She suspects that a proposed "Indoor Running of the Bulls" event in a crowded theater might present a bit of a problem.

I LOVED the world's smallest police car; the visits to Berlin, Moscow, Dublin, London and Siberia; the glimpses of famous American, Canadian, French, Spanish, Mexican and British actors; music from "A Chorus Line" done by a line-up of Siberian prisoners (you won't believe all the familiar faces in THAT bunch!); and Miss Piggy's dilemma. There were times I was the only one giggling, but then again, movies are my hobby.

The children in the screening audience adored The Muppets and their lively production numbers, the adults loved all the familiar faces, laughed at the clever dialogue and applauded the surprise guest in that iron box. Me too!