Casper the Friendly Ghost is probably the most famous ghost of all time. At least the most famous animated ghost anyway. We doubt that there is anyone you could mention his name to who wouldn’t have some kind of recollection of this lovable little guy. Even 90’s kids will remember the movie with Cristina Ricci and Devon Sawa (who wasn’t even the voice before he appears in human form, but whatever). Plainly put? Casper the Friendly Ghost is a classic.