Eight weeks in and exactly half the season in the rear-view mirror, there are an elite few defenses that have stood out amongst the teams in all of college football.
And no, not all of them will be from the SEC.
When discussing a top defense, we have to take into account difficulty of schedule as well because a predominantly cupcake schedule with numerous FCS teams can skew a team's defense toward the top.
What's the point of playing a game against the formerly named Division I-AA team? Unless you are Michigan (see Appalachian State), you usually win by a lot.
However, there have been five defenses that have played good teams and stood out in the process. All five have BCS, if not national championship, aspirations.