Date: 3/2/2011
Hack Highlight: "Ashton, you've been Punk'd. This account is not secure. Dude, where's my SSL?"

The hacker of Ashton Kucher's Twitter account had clear purpose: highlighting poor online security, with a couple of chuckle-worthy references to his TV/movie titles. After a quick two tweets, he let the account's 6.3 million followers go on their way. If only Ashton would've had the same tact with his film career.