They're huge. They’re pre-hysterical. The Sinclairs are back in their final two seasons of Earth-shaking fun as they face the challenges of everyday life in sixty million and three BC. Baby turns two – and into a total terror. Daddy Earl confronts his "diaperphobia." Charlene’s theory that the world is round lands her in scholastic hot water. Robbie deals with overwhelming pubescent urges, and in the final controversial episode, the family’s jumpin' Jurassic lifestyle gets the big chill. The brainosauraus of Jim Henson, the award-winning comedy series brings state-of-the-art puppetry and audioanimatronics to the screen -- and a whole new meaning to the words "family fun."