Here are a number of useful YouTube videos
for Particle Physics
In Search of Giants –
Discovery of the Atomic Nucleus
The Standard Model of Particle Physics
The Unification of Electricity and Magnetism
The Weak and Strong Nuclear Forces
Richard Feynman Videos
Watch lectures for free (7 videos)
(requires quick installation of Silverlight (MS) )
Also useful link: Feynman Diagrams
Best of Science Videos
Standard Model of Particle Physics
Quantum Physics: The Uncertainty Principle
The Best of Science (Homepag