It's that time of year again, when college hoops fans start salivating and filling in their NCAA tournament brackets. It's March Madness, and there's more to it than just watching 64 schools battling for the championship. There's a lot you probably don't know about the annual tournament ...

For instance, did you know that the NCAA rakes in billions of dollars from national television contracts, but doesn't actually keep any of the profits? The NCAA actually takes that money and distributes it to the schools and conferences playing in the tournament.

Here are some other interesting facts ...

• The odds of picking a perfect bracket, meaning you correctly pick every single match-up, are over nine-quintillion-to-one.

• It's known that the winning team gets to cut down the net and keep it, but did you know that they also get to keep the hardwood court?

• Gamblers spend roughly 2.5-million dollars betting on the tournament each year.

If you're planning on picking a number-16 seed to upset a number-one seed this year consider this: 16-seeds are winless in 100 tries. Good luck.