Whether you like the way he did it or not, he ended the Viet Nam war Johnson gave him. He opened up relations with China, which, until they started their current militaristic bullshit was a good thing. He started the EPA which, before they became enviroNazis did a lot to force industry to clean up their act. He didn't whine and moan when Kennedy stole the election. Was Watergate and his enemies list despicable? Yes. Was it worse than Obama's criminal use of the IRS to punish his political enemies? No.