] Google Scholar enables you to search specifically for
] scholarly literature, including peer-reviewed papers,
] theses, books, preprints, abstracts and technical reports
] from all broad areas of research. Use Google Scholar to
] find articles from a wide variety of academic publishers,
] professional societies, preprint repositories and
] universities, as well as scholarly articles available
] across the web.

So far, I am pretty impressed. I do literature searches pretty much daily in my job, so more sites like this make my life much easier. I spend most of my time at Pubmed, but it is interesting to see what google catches that pubmed doesn't. I will definitly be keeping my eye on this. - Nano

Google Scholar