Wild! I hadn’t heard about this… but apparently 18 months back, Scott Adams, the creator of Dilbert, lost the ability to speak (in most circumstances) due to some funky brain thingee called Spasmodic Dysphonia… There isn’t any known case of a person recovering from this, but it has happened and Scott can talk again… here’s his blog entry on the subject….
http://dilbertblog.typepad.com/the_dilbert_blog/2006/10/good_news_day.html