New Google Tool...
Google's got a new search engine tool out, that I think could be really useful. It's an academic search tool called Google Scholar.
Basically, it'll search academic journals and books for whatever you're looking for. It'll give you the source, a link to the source (where possible), the authors, and sometimes other sources that cited the article.
Something to keep in mind when you're working the night before to get an essay done that requires a minimum of 15 (academic) sources.