https://www.youtube.com/watch?v=j3mhkYbznBk <-- First video of a series of #physics talks by #RichardFeynman on "The Character of Physical Law". Pretty introductory, but whets your appetite for the mathematics and experimentation that his statements rely on. It's especially cool to hear him talk about the uncertainties in the laws at that time and look to what's been learned since then.