(Stop reading now if somehow you haven’t seen the end of season 4)
Great piece from Popular Mechanics about the “Physics” of LOST and the season 4 finale ;

Physicist: Einstein Would Approve of Moving the Island on Lost
How did Ben make the island “disappear” in last night’s season finale? It’s all relativity, argues a top professor who even uses Lost in his classes. Wormholes, 305-degree bearings, the Casimir effect—it all checks out with quantum mechanics, and could explain a lot for next season.

(Gotta love the internet - people finding flaws in the comments of that article - make sure to keep reading down the page)

http://www.popularmechanics.com/science/research/4266329.html?series=6