You may have seen this at some time:
Aoccdrnig to rscheearch at Cmabrigde uinervtisy, it deosn’t mttaer waht oredr the ltteers in a wrod are, the olny iprmoetnt tihng is taht the frist and lsat ltteres are at the rghit pclae. The rset can be a tatol mses and you can sitll raed it wouthit a porbelm. Tihs is bcuseae we do not raed ervey lteter by it slef but the wrod as a wlohe.
Did it indeed come from Cambridge University? Matt Davis of the MRC Cognition and Brain Sciences Unit there has written a response at
http://www.mrc-cbu.cam.ac.uk/people/matt.davis/Cmabrigde/ . It makes for very interesting reading and explores whether you can do the same thing in other languages.
If you haven't got time to read that, you might like to watch this video instead: