The good folks at Cold Spring Harbor Laboratory provide a number of helpful and well-designed educational materials on their site, and this Biology Animation Library is a real find. Visitors to the site can view one of a dozen animations offered here, and they can also download them for their own use. The animations include a brief overview of cloning, several on DNA, gel electrophoresis, and polymerase chain reaction. One can imagine that utilizing these animations in a genetics classroom would be quite easy, and students could even use these materials as a way to review basic genetic concepts. The site is rounded out by a section on the left-hand side that contains links to other educational resources created by experts at the Dolan DNA Research Center.