Loved this one, although as the author agrees it is work in progress.
This python program actually taps into your twitter stream and using google speach, reads out the tweets you receive. Loved it.
this is the link to his speaking tweets program http://www.stuffaboutcode.com/2012/10/raspberry-pi-python-talking-twitter.html
A link to it working
In fact Martin O’Hanlons site http://www.stuffaboutcode.com, makes an excellent read and I hope he keeps it up!!