Sometimes unplanned things or mistakes turn out to be brilliant. Fruit pie was supposedly a mistake. It was all meat pie in England, until someone screwed up and put fruit in it. If not for that we wouldn't have apple pie, peach pie, and a whole lot of others. Someone at 3M made post-its. It was a failure because they didn't stick as planned. They came un-stuck. But what would I do without them now? Crepes Suzette were another mistake. According to one version of the story, yogurt was the result of malice gone wrong (gone good) and turned out to be a great new thing. Marmalade was invented because someone in England had to figure out what to do with a ship full of oranges from France and not let them go to waste. One of my favorite things is the result. What other unplanned things or mistakes turned out to be great?