Job and Internship Search Engines

http://www.landit.org
Jobs and internship listings of the MN College & University Career Services Association

http://www.idealist.org
Jobs, volunteer opportunities, graduate school fairs, and much more

http://www.mncn.org
Jobs, events, conferences

http://www.careerbuildercollege.com
Internships, part-time positions, post-graduation jobs

http://www.psychologyjobs.com
Full-time, part-time, internships

http://www.quintcareers.com
Job and career information, advice, and tutorials

Additional Search Engines for Internships in Neuroscience
National Science Foundation http://www.nsf.gov/
Howard Hughes Medical Institute http://www.hhmi.org/grants/reports/scienceopp/main
Syracuse University http://hpap.syr.edu/spstate.htm
Yale Science and Engineering Research http://www.yale.edu/yser/links/extramural.html
Columbia University Biological Sciences http://www.columbia.edu/cu/biology/ug/intern.html
Mayo Clinic http://www.mayoclinic.org/jobs-rst/