Who plays Marty McFly's eccentric scientist friend in "Back to the Future"?

Christopher Lloyd

In Disney's Aladdin, what is the name of Aladdin's monkey? Which marsupial carries its young in a backward-facing pouch? In athletics, how long is a standard outdoor running track? What mutant can control weather and is originally from Africa? What type of animal is Chandler and Joey’s pet, Chick?