Another web portal offering email alerts is Science360 supported by NSF. It covers all fields of science at http://news.science360.gov/. A well-known portal devoted to educational resources in general is at http://www.merlot.org/.
The Institute of Physics (essentially the European counterpart of the AIP) has unveiled a new web platform for its journals at http://iopscience.iop.org/.
Harvard's Department of Physics has started a Video Archive of lectures (both recent and historical) by well-known physicists at http://www.physics.harvard.edu/about/video.html. A mathematician has also collected a lengthy set of movie clips at http://www.math.harvard.edu/~knill/mathmovies/. For example, check out "A Serious Man" for a hilarious snapshot of a blackboard explaining the Uncertainty Principle. (Did you catch the mistake he made in the derivation?)
There are many Periodic Tables on the web with different special features. Someone had the cute idea of constructing a periodic table of periodic tables at http://www.keaggy.com/periodictable/. Another useful resource is NIST's digital library of mathematical functions at http://dlmf.nist.gov/.
Disclaimer - The articles and opinion pieces found in this issue of the APS Forum on Education Newsletter are not peer refereed and represent solely the views of the authors and not necessarily the views of the APS.