Web Trends is a really useful tool to bookmark if you're interested in what people are searching for on Google.
Simply type terms you're interested in, separated by commas, and Google will graph them alongside each other as well as break the results down by region and language.
Here I've compared people searching for our university. I particularly like how the tool includes references to news articles so you can see whether they resulted in a surge in interest in the University.
Comparing "Edinburgh University" and "University of Edinburgh" with Google Web Trends