Finding Wally wasn't easy as a kid—and it doesn't get less tough as an adult. No problem: now there's an algorithm that can find him for you. Let's not call it cheating, though, OK?
The Waldo challenge (as it's known in the States) was posted on Stack Overflow, a collaborative programming forum. While plenty of people submitted solutions, one user, called Heike, has been voted the king of Waldo finding. You can read about his solution here—or you could go dig out your old books and have a go yourself. [Stack Overflow via The Verge]