Many are the variations of Paul Curry’s classic Out Of This World (OOTW). In fact, a whole book was devoted to the subject some years ago.
Most of these variations in handling attempt to circumnavigate the two areas which are perceived to be flaws, viz the switching of the two leader cards halfway through the routine, and the “fixing” of the second pile at the end of the trick. Both of these problems can be overcome with careful presentation, but the essential effect remains the same in most handling variations.
The late Douglas Cameron added a sublime addition to Curry’s effect.
Douglas Cameron, for those of you unfamiliar with the name, was a professional Scottish magician from Glasgow whom I had the privilege of knowing for many years. He would have been my best friend even if he had no interest in magic. He was a man who conspired to do good for others, expecting nothing in return, and always remained in good cheer, never allowing anything to worry him for too long. He possessed a broad sense of humor (how else would he have hung out with me?) and a deep intelligence, married to a strong sense of ethics.