Simple text-only quote of the day from http://www.brainyquote.com/. I found the site providing quality quotes for a while now.
Quote script:
curl http://feeds.feedburner.com/brainyquote/QUOTEBR | grep -m 3 description | sed -e 's/(.*)//' -e 's/.*//' | sed -e 's/(.*Quote of the Day from BrainyQuote.com)//' | sed -e 's/(.*logo)//'
Author script:
curl http://feeds.feedburner.com/brainyquote/QUOTEBR | grep -m 3 title | sed -e 's/(.*)//' -e 's/.*//' | sed -e 's/(.*Quote of the Day)//'
This can be customized to work on any background.
Cheers.