Global courts : Access to Supreme Court decisions from around the world.
Global Legal Information Catalog : Produced by the Library of Congress, GLIN is a public database of laws, regulations, judicial decisions, and more contributed by governmental agencies and international organizations.
Google Scholar. Limit search to american case law and scholarly legal journals
QuickLaw (McGill students). Click on the "Register Later" button to access the database. Access Canadian case law & legislation. Also usefull to locate French case law and commentary via the JurisClasseur subset.