If Snook, the star of PBS's new preschool series ''It's a Big Big World," wants to compete with the likes of ''Dora the Explorer," ''The Wiggles," or even ''Sesame Street," he'd better get a personality.
The character, a sloth who lives in a beautiful rain forest tree, makes his debut today at 7:30 a.m. on WGBH-TV (Channel 2) and again at 1:30 pm.
He's laid-back and fond of napping, which is fine for younger children, but he doesn't have a distinctive charm to stand out in a crowded field. That's too bad, because PBS is counting on this series to help it gain some traction in the very competitive world of preschooler television. Mitchell Kriegman, the creator of ''Bear in the Big Blue House," is the producer.