The high pull is a great Olympic lifting variation/accessory movement as well as a solid speed and power movement for the hips and lower body. As an added benefit it crushes the upper back, traps, and deltoids as the entire upper back and shoulder region has to assist the legs to drive the weight up. The catch at the bottom also provides a strong and rapid eccentric jolt to the upper body musculature as you're forced to quickly decelerate the weight.
The hang snatch is one the single most effective power exercises that forces the lifter to accelerate the hips with maximal effort in order to drive the weight overhead in one complete motion. Keep the bar close to the body and catching it slightly in back of the head (not in front of it) to achieve the proper finishing/slot position.
Changing your stance on cleans and snatches provides a slightly unique stimulus to your body and teaches athletes to explode from a variety of positions and stance widths. The first clean incorporates a wider position, then second uses a moderate stance, and the final rep uses a close stance.
This is an excellent power variation of the Olympic Clean. Keep the chest up throughout and be sure the hips and chest come up at the same rate. Build up speed gradually then explode at the top position.
Front squats are a great squat variation for targeting the entire lower body. When performed with lighter loads using compensatory acceleration (i.e. lifting the weight as explosively as possible), they also become a highly effective power movement. Be sure to keep the hips pushed back, chest out, knees out, and feet fairly straight (don't let them flare out excessively).
The hang clean is one of the foundational power movements for the lower body as it emphasizes a hip hinge position as well as triple extension in the ankles, hips, and knees. If you're looking to add power and speed to your body, the hang clean is one of the best lifts you can perform. Just make sure mechanics are locked in and you catch the weight on your entire foot, not on your toes.
The close grip snatch is an Olympic lifting variation I have many of my athletes perform as the weight has to move a very far distance making it a high power output movement. Adding the deadstop position where the athlete has to overcome the weight from the pins only increases the stimulus as the lifter will have to turn their nervous systems on more quickly and aggressively to snatch the weight overhead.
Here's a difficult but highly effective method for perfecting your Olympic lifting technique. Seen above is one of my athletes performing a typical power snatch from the floor with his eyes closed. This trains and improves proprioception and kinesthetic awareness. On a side note it's best not to have any one behind you when performing an Olympic lift variation as that can be somewhat dangerous if you dump the weight. This was a mistake that was quickly remedied in subsequent sets.
The hang clean and press with the fat bar is a fantastic full body exercise that focuses on strength, hypertrophy, functional size, power, explosiveness, and athleticism. When using the fat bar this greatly increases the activation on the hands, grip, forearms, and finger muscles.