Outtakes:
Win game one (Hitler or Ghandi) three times in a row or simply press 4 + Play at the game's intro. This will give you a selection of humourous out-takes.
Reported by: Nick Turk

Bonus Feature:
Win game two (Shake-hands-man) three times in a row or simply press 5 + Play at the game's intro. This will give you access to a selection of 'adult' bets.
Reported by: Nick Turk