For many, many, many years exercises such as bounding, hopping, & jumping, have been used with warm-up and fitness drills for various fitness disciplines and sports, often exercising muscles and mimicking movements involved in those sports or disciplines (so, sport-specific exercises). This distinct method of explosive training is nowadays generally termed "plyometrics" and plyometric drills are commonplace to help improve athletic performance.
Plyometrics is based on the theory that a muscle will contract more forcefully following a pre-stretch because, although much of the energy used to stretch the muscle is lost through heat, a certain amount of elasticity will remain, and so aid the force of the contraction, subsequently, in practice, this will enable someone having performed plyometric jumping drills for several weeks, to be able to jump higher or further than they may otherwise have done.
Unknowingly, you probably perform many plyometric exercises when training for your sport, but, as with all things, it certainly helps your development to understand what you're performing and why and, if you're not performing certain drills, perhaps your performance will improve with their inclusion into your training.
Below are examples of some plyometric exercises and drills, but, for further information, Donald Chu has written some very useful books, Jumping into Plyometrics is a particularly easy to follow and useful handbook.
Types of Plyometrics:
Jumps in Place
Medicine Ball Drills
Recovery from Plyometric Exercise