The National Human Genome Research Institute has a new website up which is a great resource for anyone interested in a career in genetics or genomics. It has a dozen video interviews with scientists who've followed all sorts of career paths, descriptions of many career possibilities, and links to many other online resources.
The Ecological Society of America Home Page contains a wealth of information about the society, especially information about how to join and career/job opportunities in the field of ecology.
ECOLOG-L is the listserv operated by the Ecological Society of America. If you sign up you can send and receive e-mails from all those who subscribe to the list. Of special interest to students are the many announcements of summer internships and graduate school opportunities that are sent by faculty from around the world who are looking for students interested in studying ecology. This is a "must" listserv to join if you want to do a summer research project or go to graduate school in ecology!