Tagxedo and Wordle are a great tool to create fun word clouds of text. You can design them in your own colours and layout. Tagxedo is especially cool as you can change the words to fit in many different shapes. The more a word is represented the larger the word will appear in your word cloud. Why not copy a famous speach or a book review and see how your word cloud comes to life. There are lots of ideas in the galleries. The difficulty with Wordle is you can't save them unless you 'print screen' and paste into a word document. You can print them though.