Crazy credits for
It's a Mad Mad Mad Mad World (1963) More at IMDbPro »

• The opening credits are set against an animated background that interacts
  with the credit lettering.
• The animators who animated the opening title sequence were technically
  uncredited on film, but they did get their names in during the shot where
  the giant globe "explodes" and there is a shower of name credits strewn
  over the screen. Freeze-frame reveals the names of all the animators. This
  is the same animation team who did
  A Charlie Brown Christmas (1965) (TV).
• After Spencer Tracy's credit has been shown, the words "and in
  alphabetical order" appear, and the next group of credits is assembled
  below them by animated hands: Milton Berle, Sid Caesar,
  Buddy Hackett, Ethel Merman, Mickey Rooney,
  Dick Shawn, Phil Silvers, Terry-Thomas, and
  Jonathan Winters. But after a moment, the hands reappear to
  pull out Silvers' credit and move it to the top, then Winters', then
  Caesar's, and so on until everyone has had had a turn at top billing
  in the group. The hands then quickly shuffle the credits several more
  times for good measure, all the time with the "and in alphabetical order"
  label still in place. The final order is Silvers, Rooney, Berle, Winters,
  Merman, Hackett, Terry-Thomas, Caesar, Shawn.

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