Beatpaths builds NFL power rankings from win stats

At beatpaths.com, Curt Siffert generates NFL power rankings using a clever win/loss & automatic strength-of-schedule algorithm. This is where I kick myself for letting him beat me to it. I used to track team's rise & fall throughout seasons using ESPN's power rankings, but I've been annoyed by how much ESPN commentators let the wrong factors influence their subjective ranking system.

Curt's beatpath system is completely objective; to be ranked above another team, you have to beat that team, or beat a team that beat that team. It's simple, concise, and makes neat graphs. Check it out.