http://www.youtube.com/watch?v=9rz5NekSUTM One of my favorite novels by Steven Gould is coming to theatres. GLEE! Minor spoilers for the book: Of course, this being Hollywood and all, i bet their going to butcher it, but the Jumping effects look good, and I think their going to keep it as a portal effect, which means they could include "twinning!" I greatly recommend reading the book before seeing the movie, and if you do, read the whole thing before you make judgments on it, as the beginning is a little, iffy. Happy Jumping!