I've recently been playing around with Wordle, "a toy for generating word clouds from text." Below are a few examples based on a few of my recent papers, and also my PhD thesis. Each picture is made from the words of the documents, arranged so that the words that I (and my co-authors) used more often come out bigger.
A paper of mine on the Helmholtz-Kohlrauch effect, called "The Brightness of Colour":
Our paper on lightness illusions, from 2007:
Now go and play with Wordle yourself! It's quick, easy and fun!