I don't know if anybody else has seen these, but a member over at WBB has made a series of squatting videos that are very helpful for people learning proper form or just want to learn new things. I highly recommend everybody into weight training giving them a look. Here they are...
Squat Rx #1: Lower Back Rounding at the Bottom of the Squat
http://youtube.com/watch?v=Rq8CWv8UPAI
Squat Rx #2: GMing Out of the Hole
http://youtube.com/watch?v=wY4gwVlO_k0
Squat Rx #3: Engaging the Glutes and Hamstrings (Part I)
http://www.youtube.com/watch?v=LsoyHoQU4O4
Squat Rx #3: Engaging the Glutes and Hamstrings (Part II)
http://www.youtube.com/watch?v=znPFEAtk8QE
Squat Rx #4: Bar Positioning and Squat Depth
http://www.youtube.com/watch?v=2eZ1HzoH0Rw
Squat Rx #5: Hip & Hamstring Mobility and Flexibility
http://www.youtube.com/watch?v=WKnpmQNhc3w
Squat Rx #6: A Dozen Selected Exercises for Squatters (Part I)
http://www.youtube.com/watch?v=pIECuX8o88c
Squat Rx #6: A Dozen Selected Exercises for Squatters (Part II)
http://www.youtube.com/watch?v=X4NwygdsF_c
Squat Rx #7: Bands and Chains
http://youtube.com/watch?v=vAHvURlC3OA
Squat Rx #8: Shoes
http://www.youtube.com/watch?v=rKGLVDtq0S8
Squat Rx #9: JV Squats & Overhead Squats
http://www.youtube.com/watch?v=60RPh2ueEds
Squat Rx #10: Set-Up & Breathing
http://www.youtube.com/watch?v=CXgEXiTCjqo
Squat Rx #11: Belts, Wraps, and Suits (Part I)
http://www.youtube.com/watch?v=NVGrkfFr028
Squat Rx #11: Belts, Wraps, and Suits (Part II)
http://www.youtube.com/watch?v=YRi0bPuPN-o
Squat Rx #12: 5 Common Squatting Issues (Part I)
http://www.youtube.com/watch?v=RJ2AB8mDsD4
Squat Rx #12: 5 Common Squatting Issues (Part II)
http://www.youtube.com/watch?v=steEXp9M4hQ
Squat Rx #13: Box, Pause, and OI Squats
http://www.youtube.com/watch?v=tDFR3bXhl4Q
Squat Rx #14: 7 "Core" Exercises
http://www.youtube.com/watch?v=xnlO1pNHdVY
Squat Rx #15: The Front Squat
http://www.youtube.com/watch?v=3NRmdtSvmQQ
Squat Rx #16: The Hack Squat
http://www.youtube.com/watch?v=PLgPJVwemtU
Squat Rx Interlude: Kettlebells in September
http://www.youtube.com/watch?v=4Dt3k7ze8w4
Squat Rx #17: Westside Basics (Part I)
http://www.youtube.com/watch?v=Fxnx5xozKCM
Squat Rx#17: Westside Basics (Part II)
http://www.youtube.com/watch?v=F17X0ZeuT3o
Squat Rx #18: Concentric and Zercher Squats
http://www.youtube.com/watch?v=rwUSyDyF2XQ
Squat Rx #19: Dave Draper's "Top Squat"
http://youtube.com/watch?v=L5wTfRA5SrQ
Squat Rx #1: Lower Back Rounding at the Bottom of the Squat
http://youtube.com/watch?v=Rq8CWv8UPAI
Squat Rx #2: GMing Out of the Hole
http://youtube.com/watch?v=wY4gwVlO_k0
Squat Rx #3: Engaging the Glutes and Hamstrings (Part I)
http://www.youtube.com/watch?v=LsoyHoQU4O4
Squat Rx #3: Engaging the Glutes and Hamstrings (Part II)
http://www.youtube.com/watch?v=znPFEAtk8QE
Squat Rx #4: Bar Positioning and Squat Depth
http://www.youtube.com/watch?v=2eZ1HzoH0Rw
Squat Rx #5: Hip & Hamstring Mobility and Flexibility
http://www.youtube.com/watch?v=WKnpmQNhc3w
Squat Rx #6: A Dozen Selected Exercises for Squatters (Part I)
http://www.youtube.com/watch?v=pIECuX8o88c
Squat Rx #6: A Dozen Selected Exercises for Squatters (Part II)
http://www.youtube.com/watch?v=X4NwygdsF_c
Squat Rx #7: Bands and Chains
http://youtube.com/watch?v=vAHvURlC3OA
Squat Rx #8: Shoes
http://www.youtube.com/watch?v=rKGLVDtq0S8
Squat Rx #9: JV Squats & Overhead Squats
http://www.youtube.com/watch?v=60RPh2ueEds
Squat Rx #10: Set-Up & Breathing
http://www.youtube.com/watch?v=CXgEXiTCjqo
Squat Rx #11: Belts, Wraps, and Suits (Part I)
http://www.youtube.com/watch?v=NVGrkfFr028
Squat Rx #11: Belts, Wraps, and Suits (Part II)
http://www.youtube.com/watch?v=YRi0bPuPN-o
Squat Rx #12: 5 Common Squatting Issues (Part I)
http://www.youtube.com/watch?v=RJ2AB8mDsD4
Squat Rx #12: 5 Common Squatting Issues (Part II)
http://www.youtube.com/watch?v=steEXp9M4hQ
Squat Rx #13: Box, Pause, and OI Squats
http://www.youtube.com/watch?v=tDFR3bXhl4Q
Squat Rx #14: 7 "Core" Exercises
http://www.youtube.com/watch?v=xnlO1pNHdVY
Squat Rx #15: The Front Squat
http://www.youtube.com/watch?v=3NRmdtSvmQQ
Squat Rx #16: The Hack Squat
http://www.youtube.com/watch?v=PLgPJVwemtU
Squat Rx Interlude: Kettlebells in September
http://www.youtube.com/watch?v=4Dt3k7ze8w4
Squat Rx #17: Westside Basics (Part I)
http://www.youtube.com/watch?v=Fxnx5xozKCM
Squat Rx#17: Westside Basics (Part II)
http://www.youtube.com/watch?v=F17X0ZeuT3o
Squat Rx #18: Concentric and Zercher Squats
http://www.youtube.com/watch?v=rwUSyDyF2XQ
Squat Rx #19: Dave Draper's "Top Squat"
http://youtube.com/watch?v=L5wTfRA5SrQ