Here´s a short Vice documentary featuring Mujica. I certainly think they could have chosen a more interesting premise to talk to him than getting baked, but it still shows what a pleasant human being he is. I wish I had a grandfather like him.
Edit: I just watched it again, and damn, this guy is so sensible and human, it´s almost unbelievable he´s a high ranking politician.
Edit II: There´s now a longer cut available that includes non-weed-related talk: