I've started uploading these CSVs to a public Google BigQuery dataset called [nfl], so you can run queries over them like this:

    SELECT off, COUNT(off) AS count
    FROM [nfl.2012reg]
    WHERE description CONTAINS "INTERCEPTED"
    GROUP BY off
    ORDER BY count DESC

(This counts the number of plays that resulted in an interception by the team that threw the interception, sorted from most to fewest INTs)