What is quantum entanglement?

Entanglement is one of the strangest things about quantum mechanics.  So strange that Einstein once called it “Spooky action at a distance”.

With the help of magician Dan Trommater, and some physical comedy from Albert Einstein and Niels Bohr, one of the main ideas behind entanglement is explained.  This video has been entered into the Arstechnica Science Video Contest.

If you have more questions about entanglement, I can try to answer them in the questions. If I have enough time, I may even be able to make a video for you so ask away!

Update: Dan and I are thinking of making some more science/magic videos.  If you have some suggestions for topics in physics that you would like to see explained using magic post it in the comments below.