Ok, so I have spent way more time playing around with this then I should, but it is really cool! It is a new web application called Wordle. You can copy speeches or any kind of text into it and it will generate an artistic word cloud. You can then play around with the fonts and colors to get different looks.
Here is one I did with my Journey to Right Brained Learning post (wish that I could post it larger but you can click to get a larger version):
You can browse the gallery and find a lot of interesting ones like Martin Luther King Jr.'s I Have a Dream Speech. The possibilities are endless...you could plug in songs, poems, favorite parts of books, movie dialog, blog posts, you name it.
It looks like it is a fairly new application and updates are ongoing. You can check out more information on the Wordle Blog.
I will warn you, it can get a bit addictive. So only click over if you have some time to kill...