Robert Scoble did an on-air (or: on YouTube) interview and unlocked his phone while he was talking. Youssef Sarhan noticed his passcode was exposed, and wrote it up on Tumblr. Bobby, Bobby, it's time to change your password!
Sarhan notified Scoble before posting, but he certainly could have done something more malicious. As video becomes more and more ubiquitous in our day-to-day, this kind of thing will only become more common. Don't re-use your logins, people.