The thing about Hitler that I admire most is how he persuaded Stalin to sign a non-mutual-attack pact in 1939.
So when Barbarossa was kicked off on June 22, 1941, and the Soviet Union was totally unprepared (in spite of countless intelligence reports), Stalin would lock himself in his room in Kremlin, and wouldn't come out for 10 days (or so).
The man who destroyed his entire potential opposition in Moscow and millions of innocent Soviets, trusted... Adolf Hitler!