Working Papers:

    NBER  National Bureau of Economic Research
    Social Science Research Network
    EconWPA  by  Bob Parks

Other Research Resources:

    Resources for Economists on the Internet  by Bill Goffe
    NetEc  network for economic resources on the Web
    Statistical Resources on the Web  managed by the U. of Michigan
    Google: A Scholarly Guide  posted by Harvard
    IDEAS articles, working papers, information on software, etc.
    The IMF (International Monetary Fund)
    The World Bank

Teaching Resources:

    On-line Lecture Notes econ PhD course material in macro, micro, econometrics & math
    Eric Zivot's Courses lecture notes, some handwritten, on econometrics and finance
    Fumio Hayashi's Econometrics useful materials relevant to his text
    MIT OpenCourseWare: Economics material for graduate and undergrad courses

Etc:

    Adobe Reader  free software for reading PDF files

    McMaster University Archive for the History of Economic Thought
    The Library of Economics & Liberty 
    The Complete Works of William Shakespeare 

    KC-area Web Radio
    KCUR 89.3 FM
    WEBN on the Web