Here are some links to physics sites that may be of use.
SocietiesAmerican Institute of Physics AIP has tons of information including employment and education statistics, news, events, speakers, special topics, and much more.
American Physical Society Similar in content to AIP.
Grad SchoolGrad School Shopper Contains tons of data sheets for the physics and astrophysics graduate programs out there. This is going to be something you'll want to spend a lot of time with as you begin to think about grad school.
My own data sheet on grad schools We have old official GRE Physics exams in the department. Ask Dr. Kosik or Dr. Murphy about where to find them! Do not use the purple book by REA, it's terrible.
Physics GRE Yahoo Group for hints on preparing for the evil test.
PhysicsGRE.com Another Physics GRE prep site.
WhoGotIn.com A list of when people hear back from graduate schools so that you can know when to expect to hear back yourself.
Summer ResearchResearch Experiences for Undergraduates This is something you will want to look at! REUs are a great way to get research experience. They are summer programs held at schools across the nation, and they pay you.
ResourcesAmerican Geophysical Union Pretty self-explanatory.
Physical Reference Data Any physics information that you could ever need but are too lazy to look up in the CRC. Constants, spectra, atomic characteristics, half lives, etc.
Visual Phyics Check this out if you're a visual learner and are having trouble with more abstract ideas.
Physics 2000 Similar to above, though over more advanced topics.
Here are the other universties which contain an SPS chapter (only those in zone 8 are listed)
Illinois ChaptersBradley University
Eastern Illinois University
University of Illinios
Southern Illinois University at Carbondale
Southern Illinois University at Edwardsville
Western Illinois University
Indiana ChaptersButler University
University of Evansville
Indiana State University
Rose-Hulman Institute of Technology
Kentucky ChaptersBera College
Eastern Kentucky University
Jefferson Community College
University of Kentucky
Kentucky Wesleyan College
University of Louisville
Morehead State University
Murray State University
Northern Kentucky University
Owensboro Community College
Thomas More College
Western Kentucky University
Tennessee ChaptersAustin Peay State University
David Lipscomb University
East Tennessee State University
Middle Tennessee University
University of Tennessee-Chattanooga
University of Tennessee-Knoxville
University of Tennessee-Space Institute
Tennessee Technological University