TWiP is a monthly netcast about eukaryotic parasites. Vincent Racaniello and Dickson Despommier, science Professors from Columbia University, deconstruct parasites, how they cause illness, and how you can prevent infections.
http://microbe.tv/twip
TWiP #27 - Trematodes
Vincent and Dickson continue their discussion of trematodes, or flukes, which have a snail as a reservoir host.