SLO,
I was not trying to urge you to watch historical TV programs but read books.
If you've read his writings, you would see that he was extremely rational person who knew exactly what he was doing. In 1924 he explained in precise detail how and about what you should talk to the crowd in order to achieve certain effect. He followed his own advice and achieved exactly what he set up to achieve before he even started.
Yes, his speaches and gestures were not convincing to intellectuals, but they were not intended to affect intellectuals.
As for the content of his worldview - about ethnicity, politics, etc, many people around us share them. They may have been wrong but common rather than unusial even now. He was just successfull in implementing them.
History is full of geniuses that set major event in motions by their theoretical works (Marx, Adam Smith, etc.) and those that used opportunity presented by history - Napoleon, Alexander the Great.
Hitler was the only one to come up with theory while having nothing (Main Kamph written in 1924 while in jail) and then implement it.
He realised that even before he started and any grandeur that he felt was not delusional but quite real and more substantiated the further he advanced.
He did not imagine becoming a totalitarian leader of a great indistrial nation - it really happened.
I've seen plenty of personal opinions of people about germans they saw - and fought - in WWII. According to all accounts, they were extremely competent, rational people and were more capable than anyone else in combat or production.
I've also read accounts of germans commonly recognised as very intelligent if not outright geniuses - like Erich v. Manstein - and not great lovers of Hitler about Hitler, written after the war when they had no incentive to make him look good. Quite illuminative.
rpm371: LOL, how did I get dragged into this? I have'nt watched 1 second of that drivel. 
Good for you, I guess. I did not watch it either. Anyway, if you are interested in history, whether you love Hitler or hate Hitler, read Mein Kamph and you won't regret it.
miko