"Bob's your uncle!" is a British catchphrase, meaning something like "And there you have it", "It's All Good", or perhaps more formally "Q.E.D.". The movie Snatch — a family-favorite crime/caper flick that rivals Fight Club or Stark Raving Mad in violence, foul language, and high density of quotable lines — introduced me to an arch variant of "Bob's your uncle!" that has become one of my favorite idioms:

"Robert is your mother's brother!"

TopicLanguage - TopicHumor - 2007-09-09

(correlates: Stark Raving Mad, Mystery Men, Comments on UncleBert, ...)