From the Cornell Law Library:
Cornell Law Library is pleased to announce its new Legal Research Engine available at http://library.lawschool.cornell.edu/guides/researchengine.asp
This specialized search engine helps users easily find authoritative online legal research guides on every subject. It searches approximately 20 different web sites that either prolifically publish guides, or index and link to guides. The number of web sites searched was deliberately kept small to keep search results manageable and focused. You can also add it to your Google home page.