re: Has anybody here done a "Fat, Sick & Nearly Dead" long-term juice cleanse ?

No, but that Breville from the movie is awesome and I use it a lot. You will get piled on here for doing something gimmicky, but I don't see a lot of downside to giving it a shot. The only argument I see against the juicing is, are you really just taking away a lot of the value of the fruits and veggies by removing the fiber? Of course, the point of it is that you get the nutrients without the volume.
Movie is free on Hulu.