Getting to the quarterback is a part of every game plan and pass rushers need a variety of techniques to get past offensive lineman. For linebackers this often means dealing with an offensive player that has a significant size and weight advantage.
In the clip below Coppell High School (Texas) defensive coordinator, Mike DeWitt, breaks down the technique he teaches his linebackers to use against bigger offensive lineman and get to the quarterback. This clip is from a DVD dedicated to linebacker play. For more information about that DVD click the link 40 Linebacker Drills
The YouTube video has sound, so please make sure that your sound is turned on and that you have access to the site. (some schools block access to YouTube)