Resources on Scientific Careers/Graduate School

Simfish

http://sciencecareers.sciencemag.org/ => Science Magazine's Careers section

http://www.nature.com/naturejobs/ => Nature's Careers section

http://chronicle.com => Chronicle of Higher Education - not specific to science, but still useful at times

http://nsf.gov/publications/ => National Science Foundation - very interesting publications and statistics

http://www.aip.org/ => American Institute of Physics - information similar to NSF's, and more specific to physics

http://aas.org/career => specific for astronomy

http://sciencewatch.com/ - tracks trends in global research, and identifies what's potentially hot

http://www.phds.org - NRC rankings

http://isihighlycited.com/ - highly cited researchers

I also have a lot more at http://del.icio.us/inquilinekea/gradschool

Dr_Scientist

IOP also has a very good career section:
http://www.iop.org/careers/index.html