Scroll down the page to Chapter 45 links. All are good.
There are also many links from other chapters that are relevant to this course.
http://www.youtube.com/watch?v=gsF49PHQvPQ&feature=related – Myelinated nerve action potential
http://www.youtube.com/watch?v=dSkxlpNs3tU&feature=related – 3-D animation of multiple neurons
http://icarus.med.utoronto.ca/neurons/index.swf – Detailed info on all things neuronal
http://outreach.mcb.harvard.edu/animations/actionpotential.swf – Another animation showing all things neronal.