Banksy - Master of the masters?

As we all know, Banksy made a huge contribution to streetart with his flawless creations all over the world. Who could've missed all the rats everywhere? I got introduced to his world by watching his movie "Exit trought the giftshop" past winter and the whole world of streetart opened up for me. Who could've then known what was in store in this huge big world of amazing marks of expression. These