The Muppets to be a vital component of its increasing popularity, providing an "effective and pleasurable viewing" method of presentation for the series' educational curriculum. In the early 1970s, the Muppets continued their presence in television, primarily appearing in "The Land of Gorch" segments during the first season of "Saturday Night Live". As his involvement with "Sesame Street" continued, Henson mused about the possibility of creating a network television series featuring the Muppets; as opposed to "Sesame Street", however, this proposed series would be aimed at a more adult audience and focus largely on sketch comedy. Two pilot specials, "The Muppets Valentine
The Muppets Studios (known then as Disney-MGM Studios) for a year. Muppet*Vision 3D, a 4D film attraction that uses audio-animatronic Muppets and 4D effects, then opened at Disney's Hollywood Studios on May 16, 1991. The attraction is notable for being the final Muppets project to be produced by Jim Henson. Muppet*Vision 3D had a subsequent opening at Disney California Adventure, on February 8, 2001, and operated there until its closure in 2014. In addition to their main presence at Disney's Hollywood Studios, the Muppets also appear in "Great Moments in American History", a live show at the Magic Kingdom and the Muppet