... a new No. 1 sits atop the rankings once again.

The Oregon Ducks, fresh off an impressive win over the USC Trojans, jumped the Auburn Tigers to become the third top-ranked team in as many weeks.

All five remaining undefeated schools—Oregon, Auburn, TCU, Boise State and Utah—are in the top five of this week's rankings, and it looks like we could see a BCS buster play for a national championship.

But they better not get too comfortable.

Some one-loss teams from college football's power conferences are right on their tail and are looking to make that leap into the top five.

So which schools will climb up the BCS rankings this week and which schools will fall?

Let's take a look at the top 25 teams in this ...

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