Generally, the future is so chaotic that there's no way of guessing what will come next. But one area is so obvious, so repetitive, so completely and utterly predictable that it's a breeze to guess what's coming next: pop music.
Scientists have been trying for a while now to come up with a way to predict the next big pop song. It might seem like a trifling matter, but it's a chance to predict group behavior in an easily quantifiable way. Sure, it's not exactly psychohistory, but it would still be pretty cool to have a computer algorithm that could accurately predict the future, even if it's just the pop music charts.