I watched Successful Coaching Football Instructional Joe Paterno: Linebackers DVD and its was great. The Linebacker video should be called Jerry Sandusky Linebackers because Coach Sandusky conducts the training on the video. But do not let this fool you, this is one of the best coaching videos I've watched, especially on defensive linebacker drills.
I rented the football video from Netflix and after watching the DVD put it on my 2010 Christmas wish list. I would like to get the whole DVD set. I have watch most of the DVDs and all are pretty good. The running back and o-line DVDs are really good too; Successful Coaching American Football: Offensive Line and Frank Solich: Running Backs Successful Football Coaching.
I highly recommend the Successful Coaching American Football: Linebackers DVD.