This lecture will benefit from the presence of the humanoid robot HRP2 (1.54m, 58 kilos). A series of demonstrations will be carried out on the robot by several researchers from LAAS-CNRS in Toulouse. They will illustrate several fundamental concepts seen in previous lectures, such as the notion of configuration space, redundancy and sub-actuation of a system, bipedal locomotion and anthropomorphic action. It will conclude with a debate with the audience on the stakes and challenges of humanoid robotics.