PBS
Pbs: The Shape of Life
Companion site for the 8-part PBS series, "The Shape of Life." Each section focuses on a different phylum, from porifera through chordata. This site is highly informative, with beautiful photography.
University of California
University of California Museum of Paleontology: Understanding Evolution
This resource presents extensive information for learning about and teaching evolution including an in depth course "Evolution 101", teaching materials, and a resource library.