... "Offense sells tickets, but defense wins championships."

Ask Nick Saban what was the key to Alabama winning the 2009 BCS Championship and I'm pretty sure he'll focus on the play of his defense.

There are some outstanding defensive units this season. It most likely starts with North Carolina's experienced and talented group. But there's also Ohio State, Nebraska, Iowa, Florida, Oklahoma and Texas.

It's hard to put Alabama on that list yet, but don't be shocked when the Tide turns out another outstanding defense. But what makes the units so good are the freaks of nature that play defense.

Who are those special talents in 2010? Here's a look at the 25 best.

Bleacher Report - College Football