This project, at Northwestern University, allows you to hear dozens of cases argued before the Supreme Court. Searchable by title, citation or subject. Full-text of the cases are viewable at the Findlaw site. Making a Federal Case Out of It Federal courts below the Supreme Court often provide precedents in media law on issues such as privacy and free expression. Making a State Case Out of It Still sparser than Federal court decisions.
Individual states have excellent decision retrieval databases.
A handful of some of the better meta-law sites, along with some guidance about legal research and writing. Georgia State Univ. How To Shepardize An interactive guide to the use of Shepard's citator series and software. Not a commercial service, but a pay-BBS service from the U.S. Office of Courts allowing access to U.S. district and bankruptcy court records. XChange Lexis-Nexis also offers individual cite and Shepardized searches.