In 'A Charlie Brown Christmas', what kind of Christmas tree does Charlie Brown choose?

Which Looney Tunes character ends cartoons saying "Th-th-th-that's all, folks!"? Which Looney Tunes character constantly chases the Road Runner? Which company does Wile E. Coyote buy his gadgets from? In 'Peanuts' TV specials, what is the name of Charlie Brown's dog? In 'Dexter's Laboratory', what is the name of Dexter's annoying sister? What are the names of 'The Powerpuff Girls'? In 'Gravity Falls', in which state is the town of Gravity Falls located? In 'Hey Arnold!', what shape is Arnold's head often compared to?