In Bejeweled Blitz, if you manage to get five gems in a row, you get what's called a Hypercube, which is kind of like a Wild Card. You match it with a gem of any color and it clears all gems of that color from the board.
But what if you're skilled (or lucky) enough to get two of them next to each other?
It turns out that if you clear a Hypercube with a Hypercube that it clears every gem on the board!
And at 250 points a pop, that's an easy 16,000 points!