Christopher Cross hit No. 1 in 1981 with the theme song from which Dudley Moore film?

In "A Christmas Carol", what is the name of Bob Cratchit's sickly young son? Christmas Island in the Pacific got its name when which British explorer found it on Christmas Eve 1777? Christmas Seals were first sold in the U.S. in 1907 to raise funds to fight which disease? Which Hungarian inventor, famous for his cube puzzle, released a folding puzzle called "Magic" in 1986? Christopher Lasch critiqued self-absorbed society in which 1979 bestseller? Christopher Lee rose from the grave as which character in a 1968 Hammer horror film? Complete the title of Christopher Paul Curtis's 2000 Newbery Medal winner: "Bud, Not ___". Christopher Plummer narrated a 1993 Family Channel series about which Paris schoolgirl?