On Academic Earth are several different sociology courses using MIT OpenCourseWare and provided by UCLA, MIT, and the University of Notre Dame just to name a few, each covering different aspects of sociology. Also has a list of University lectures and videos.
Yale provides access to students interested on the topic of Sociology Foundations for Modern Theory. On the site, students can view the lecture as well as download the notes and see what chapters were read for the course.
The POWERMUTT (Politically-Oriented, Web-Enhanced Research Methods for Undergraduates - Topics and Tools) Project is a Web site that can serve as a basic on-line textbook for teaching research methods in political science and cognate disciplines.
This web site includes comprehensive documents on hate crimes across the USA. The Southern Poverty Law Center reports hundreds of active hate groups in the United States. This is something everyone needs to be aware of. Do you know what is in your backyard? Check it out. This is an excellent site for course assignments and or discussion in all fields of study.