That's such an odd way to put it, because Muppet Christmas Carol is arguably the most faithful adaptation of Dickens' original, as it is the only one to actually incorporate the original Dickens narration.

It's more accurate to say that Starship Troopers the movie is an adaptation the same way that Blade Runner is an adaptation of Do Androids Dream of Electric Sheep?, in that it has some themes vaguely in common with the original but is otherwise barely recognizable as such.