Google is a pretty simple tool to use, but its deceptively simple syntax hides a power that may surprise you. Recently, Google added two new features to its interface. One, a define keyword allows you to find the meaning (and access to a glossary) of the term that comes after define. For example, this query works, this one works as well. There is another new feature as well, the calculator. Normal operations work, but to add an uniquely Google touch, a complex query works as well. There is more to Google than meets the eye, look over the features page when you have time.
Edit: corrected typos and grammar, seems I have to be awake the next time I do this. I bend the rules a lot nowadays.