PBS
Pbs: Nova: Time Travel: Think Like Einstein
Addressed with questions about relative speed and the speed of light, students begin to "think like Einstein" while exploring the science behind the mystery of time travel.
American Museum of Natural History
American Museum of Natural History: O Logy: Train of Thought
Try out your ability to think like Einstein by working through two thought experiments that help explain how satellites stay in orbit and how the speed of light affects the universe.
Other
Fear of Physics: Albert Einstein's Theory of Relativity
Fear of Physics uses animations and simple language to teach the theory of relativity.