his personality consisted of traits and quirks that would be ideal in a childrens show hosts : a never-failing tendency to demonstrate physically what he was talking about , a never-failing tone of almost blissful content mixed with near-excitement , and also , a glint in his eye that , in the case of the childrens show host , would be merely a slight shine of pleasant , completely benign immaturity , but in paul , was actually a hint of the sadistic , manipulative monster that lurked beneath the whole faade .