Flights to Guam! DeLoreans! Airborne telephone booths! Why can't the fictional scientists of movies and television invent a simple, practical way of sending people forward and backward through time that doesn't require all the complicated hassle? In honor of tonight's Lost finale, and the hilarious multitude of other time-traveling blockbusters coming to multiplexes over the next few weeks, we present the Ten Least Convenient Methods of Time Travel in Entertainment History.