Finding Court Cases

Federal and State Cases via LexisNexis
Search by case name, citation, or keywords. Cases include annotations and links to related cases.
Guide to finding cases in LexisNexis

FindLaw.org
There’s a wealth of information on this site including links to information about the Supreme Court, court cases, and codes for the different states.
To find Supreme Court Cases, go to http://www.findlaw.com/casecode/supreme.html.
For other helpful legal resources, go here: http://lp.findlaw.com/

NYU Law Library Legal Research Guides
NYU Law Library has a number of helpful research guides including A Guide to the U.S. Federal Legal System: Web-based Publicly Accessible Resources that includes links to finding Supreme Court Cases.

In addition, the 6th Floor Reference Desk at Bobst which specializes in Business, Governement Documents, and Public Policy can be a good starting place for law-related matters.