"Arthur and the Big Riddle" Alex Trebek lends his voice as Alex Lebek -- host of the cool new game show, RiddleQuest -- in this episode that poses the age-old riddle "is winning really everything?" "Double Dare" What if your friends dared you to skip homework -- and then double dared you to skip school?! Find out what happens when Arthur's wish to play hooky becomes a group pact and the plan goes not quite as expected.