The shoe company sets up the beginning of its commercial as if it were a David Attenborough-narrated nature documentary, complete with grazing wildlife (in this case, a gazelle) and predator (in this case, a cheetah) waiting some distance away. It's all pretty standard Discovery Channel-type stuff – until a human in running shoes races into the picture. What will happen next? Will the human defend the gazelle? Take on the cheetah? We have to admit, we're hooked.