A combination of practice and major focus has proven to be effective in developing Marilyn Calciano's squat.
For ALL of us the squat is a work in progress and takes YEARS to perfect. As simple as it seems, it is important to remember to constantly and thoughtfully practice the squat.
Squat Therapy [WMV]

4 Rounds:
Run 800m for time
4 sets of Tabata Squats
Rest 3 min. before starting next round

4 sets of Tabata Squats=20 sec. of work/10 sec. of rest x4
(NOT 4 full tabatas)