Everything’s much better with Muppets. Include Tim Curry, and you have an authentic classic. This is the third adjustment of Robert Louis Stevenson’s novel on this list, and it is by far the most entertaining. Kevin Bishop plays this iteration of Jim Hawkins, while Curry does his best to unseat Robert Newton as movie theater’s finest Long John Silver (and, arguably, succeeds). The vast majority of the remainder of the cast is, naturally, played by the Muppets, and the classic Muppet values is on complete display in this joyfully disorderly rendition of the classic adventure story.
As Kirk R. Thatcher, who co-wrote the movie script with Jerry Juhl and James V. Hart, informed Tough Pigs, “Muppet Treasure Island” was part of an effort to move the Muppets far from the sweet taste of “The Muppet Christmas Carol” and back to a zanier vision of the characters. Sight gags based on Henry Kissinger and Carmen Miranda, in addition to lavish dance sequences and a pig character named “Spa’am,” make sure the film measures up to those goofy ideals. With humor and visual wit to spare, “Muppet Treasure Island” is an imaginative and enduring adjustment of the essential pirate story.
Source: https://www.slashfilm.com/928722/the-best-pirate-movies-ranked/