Everyone should check out the technique videos at the NSCA (National Strength and Conditioning Association). The videos use Dartfish software to show the movements in slow motion and frame by frame.
For example, if you check out this video of the Clean, you can clearly see the positions of “triple extension” as well as how the lifter actually jumps of the ground.
As an example of what is possible, check out the video below of Pyrros Dimas at the 2004 Athens Olympics. Dimas is a 3 time Olympic gold medalist and considered on of the best Olympic lifters of all time.
