This is old news, really, but CNN.com just picked it up. At Mental Floss,
"The Stories Behind 20 Muppet Favorites"! Get the sordid histories of Kermit the Frog, Miss Piggy, Gonzo the Great (or should I say Snarl the Cigar Box Frackle?), and more.
10. Oscar the Grouch is performed by the same guy who does Big Bird, Carroll Spinney. Spinney said he based Oscar's cranky voice on a particular New York cab driver he once had the pleasure of riding with. He was originally an alarming shade of orange. In Pakistan, his name is Akhtar and he lives in an oil barrel. In Turkey, he is Kirpik and lives in a basket. And in Israel, it's not Oscar at all -- it's his cousin, Moishe Oofnik, who lives in an old car.