Frank Oz and Jim Henson in The Muppet Movie (1979)

Frank Oz, Jim Henson, Dave Goelz, Richard Hunt, and Jerry Nelson in The Muppet Movie (1979)

Frank Oz, Jim Henson, Dave Goelz, Richard Hunt, Jerry Nelson, Rowlf, The Great Gonzo, The Electric Mayhem, Kermit the Frog, Miss Piggy, The Muppets, and Fozzie Bear in The Muppet Movie (1979)

Frank Oz and Miss Piggy in The Muppet Movie (1979)

Frank Oz, Jim Henson, Kermit the Frog, and Miss Piggy in The Muppet Movie (1979)

Jim Henson and Kermit the Frog in The Muppet Movie (1979)

Frank Oz and Fozzie Bear in The Muppet Movie (1979)

Jim Henson and Richard Hunt in The Muppet Movie (1979)

Frank Oz, Jim Henson, Dave Goelz, Kathryn Mullen, Jerry Nelson, The Great Gonzo, Kermit the Frog, and Fozzie Bear in The Muppet Movie (1979)

Frank Oz, Jim Henson, and Richard Hunt in The Muppet Movie (1979)