The Fastcase Public Library of Law [1] was launched yesterday as "the most comprehensive free resource for legal research online." PLoL claims that it is the largest free law library in the world.  A cursory examination shows an easy to use interface with links to caselaw, statutes, and regulations.  You can look at federal law or choose your state from a dropdown menu.  We'll all have to spend some time trying it out to see if it's a resource we can enthusiastically recommend. 
There are also links to content you have to pay for - legal forms, for example, is one of the main tabs but you have to buy the forms after viewing them.  I'm not crazy about that - But most of the links are free.  Fastcase is a commercial legal research company that specializes in caselaw databases.  Offering free, well-organized legal information is probably a smart business decision too if it builds the name and reputation of your company.