From Mark Frauenfelder ...Password-cracking software runs at 8 million guesses per second:
oclHashcat-plus is a 'password-recovery' tool that chews through 8-million guesses a second. It optimizes its guesses by trying phrases from 'the Bible, common literature, and in online discussions,’ and by formulating characters into websites' required 'password-construction protocols.'"
An example passphrase that was cracked:
“Ph’nglui mglw’nafh Cthulhu R’lyeh wgah’nagl fhtagn1,”