music: 50's Chart Toppers: Name The Artist: Mambo Italiano?

Questions

which singer starred with Kevin Costner in the film The Bodyguard?

name the characters in Friends who are brother and sister?

for whom did Paul McCartney write 'Hey Jude?

in the film It's a wonderful life, what happens every time an angel gets wings?

what is the name of the housekeeper in Father Ted?