Most martial arts enthusiasts will know this by a number of names, most commonly the roundhouse / roundkick in the USA.
Although it is not necessarily the most practical kick, it can be effective providing that it is use with speed, accuracy and good timing of execution.
Most experienced fighters will know this kick is on its way the moment your shoulders begin to rotate, and are therefore already planning their defensive shift, and counter-attack. Therefore to overcome this failing, you must combign the technique with a number of other combos, such as a flurry of punches to drive your opponent backwards, and then launch this kick for a big finish. Only with timing and excellent delivery is this kick worth attempting during sparring.
Again as with spinning techniques, looking for your target placement for the kick is key, as your legs will generally follow your eye because of how your mind works. - pay close attention to this in the video.