I love watching all the free NOVA full-length episodes featured at the PBS.org website. My all-time favorite ones are the Fabric of the Cosmos: Space and Time episodes hosted by Brian Greene. He keeps me up-to-date on all the quantum mechanics theories I could ever hope to understand. Thanks Brian Greene for making Quantum Theory accessible to all!
Check it out! http://www.pbs.org/wgbh/nova/physics/fabric-of-cosmos.html#fabric-time