This video is meant to shed some light on what Leon is capable of. It goes over B&B setups, Critical Burst setups, Power launcher combos (indoors and outdoors), as well as environmental combos (an area Leon excels in). All the combos displayed in the video cannot be stagger escaped, which means that your opponent is put in a situation where he is forced to guess and risk a hold.
I hope you find this video both informative and entertaining. ^^