Some big stars walked away from some even bigger trainwrecks waiting to happen. Sometimes the writing's on the wall.

Back to the Future, Men in Black, The Fifth Element and more rank among the 5 most fun sci-fi movies of all time.

An eight-year-old who lost the lower part of his leg to cancer has reignited his dream of becoming a Formula 1 driver, topping the podium of a junior go-karting race using a prosthetic leg. Pedro ...