Aaaaaahh! The wrong...it burns!

I would have to do To Wong Foo Thanks For Everything, Julie Newmar
Kermit - Vita (of course while in drag he must be played by by Piggy but voiced by kermie)
snoogums (the REALLY BIG BROWN MUPPET MONSTER) Noxi
Gonzo - Chi Chi
Sam the eagle - Officer Dullard
the Judges (names escape me so long since i have seen it) as the police at the station)
The Fireies from Laberynth as the young guys in the gang
The old garbage carrier from Laberynth as the chick with low self esteem
Rawlf the dog as the cafe owner.
Beaker as the bad Husband
Janice as the wife
The 2 gelflings from Dark crystal as Bobby lee and Bobby ray
Augra from the dark crystal as the old old woman with the movie theatre
Scooter as the young man that runs the store
Random Poddlings as extras
The other female pig form Pig in Space (curly haired) as the cafe owners love interest
Dr Bunsen as the Drag show host
Ru paul as Ru Paul - after all there always has to be a human somewhere
Creepy guy with throwing fish for John Jacob Jinglehiemer schmidt
the supermodel in the china bowl stays and so does Julie Newmar

thats off the top of my head

Preaching To The Perverted *snicker* (okay, the thought of Miss Piggy dressed as a Domme is more than mildly amusing)

I'd Do Ghost Muppets (Ghost Busters)

Peter Venkman (Bill Murray) as played by Kermit the Frog. "Human sacrifice, dogs and cats living together, mass histeria!"

Ray Stantz (Dan Ackroyd) as played by Fozzy the Bear. "It's the Stay Puffed Marshmellow Man (wakka wakka)"

Egon Spengler (Harold Ramis) as played by Dr. Bunson Honeydew. "Imagine a twinkie 35 feet long and weighing approximately 650lbs."

Winston Zedmore (Ernie Hudson) as played by Doctor Teeth. "That's a big twinkie."

Dana Barret (Sigourney Weaver) as played by Miss Piggy. "There is no Dana, only Zuul."

Lewis Tully (Rick Moranis) as played by Gonzo. "Yes, have some."

Walter Peck (William Atherton) as played by Sam The Eagle. "They caused an explosion."

Jeneane Melnitz (Annie Potts) as played by Janice. "Oh, that's very fascinating to me. I read a lot myself. Some people think I'm too intellectual but I think it's a fabulous way to spend your spare time. I also play raquetball. Do you have any hobbies?"

Gozer (Slavitza Jovan) as played by Beaker. "Are you a god (mee-mee-mee)?"

May I also suggest, The Passion Of The Elmo