Casper gives a familiar mattress promise a character shoppers already know, right down to his nightcap. I get a kick out of Johnny Depp. Foibles and all, he’s one of our most inventive actors, and I’m looking forward to Ebenezer despite having seen countless regurgitations of the Dickens story I read eons ago. (Check out the trailer.) Casper has a theory about its famously miserable protagonist: maybe ol’ Scrooge only needed a better mattress. Its Paramount partnership runs with “The more you...