Unbelievable as it may sound, both of these shady characters were nominated for the most prestigious award given to people who work towards world peace. Stalin was nominated in 1945 and 1948 for his efforts to end World War II.
Hitler's nomination, however was supposed to be a joke. In 1939, a member of the Swedish parliament, EGC Brandt, nominated Hitler for the peace prize. Brandt never intended for the nomination to be taken seriously.
Brandt intended for the nomination to be satiric criticism of the current political climate in Sweden. The nomination was, obviously, not well received and was swiftly withdrawn.