PhD Comics has a quick tutorial movie on the Higgs Boson here. It's very good and explains a great deal.
I do quibble with one comment in the film. The narrator says there cannot be repulsive gravity. Some models (notably relativistic models) actually predict repulsive gravity as a product of negative mass. (See here. A good discussion of gravitational interaction with anti-matter is here.) The Standard Model doesn't have negative gravitons. But there are some models of dark matter that suggest it.