I had no idea what it was at first, and when I decided to watch it i ended up choosing episode zero. And if any of you have ever watched episode zero of this series, it has nothing to do with the series until the end. So i had a total brain fart and i didn't know what was going on, so i quit watching it. But i decided to give it another chance about two weeks later starting with episode 1, and it was awesome!
If you ever have time, go to thiswebsite and type in Haruhi Suzumiya and watch it. It is completely in english too.