Pangea, right? Right? Not really. Despite the fact that most people have only ever heard of the one supercontinent, our planet has had a number of them. Earth's land masses - never content to just sit around and think deep thoughts - have been on the move. And like any massive, slow-moving behemoth, these babies are hard to steer. They crash into each other a lot (geologically speaking) and create these monstrous landmasses.
We are living through a relatively rare period of time in our planet's history, when the continents are comfortably spread out with plenty of elbow room, but there have been a number of periods when they were all smashed together in one configuration or another.
What were earth's known supercontinents? Take a look here and you'll learn a thing or two about it.