BBC Radio 4 have a cracking episode on their Documentary of the Week podcast called Invalid Password

Worth listening to 30 mins of just how easy it is to crack your password. It was done live with the BBC reporter who was rather shocked and non to pleased either. It features the hacker who cracked the passwords from the Linkedin file. He successfully cracked 91% of all the passwords in 5 days!

It also highlights just how crap our passwords are and indeed why we should use password generators.