Dear Lord, people... The only thing worse than a left-winger defending Nixon is a left-winger defending Reagan.
Nixon could have been disastrous, but he was restrained by a Democratic Congress. I'm not a fan of the man himself and I do think he was horribly corrupt (and should have been put on trial post-resignation). I have a personal disgust with that. I also think his command of the Vietnam War was criminal and I vehemently disagree with his veto of the War Powers Resolution.
However, with that said, there were important steps made during his Administration on the foreign policy front. Domestically, I think he was most definitely a moderate during his time. Some of our best environmental laws came about during the Nixon Administration. He also had a constructive
answer to dealing with the healthcare situation in this country. I would've been strongly on Ted Kennedy's side at the time, but I'd easily embrace Nixon's healthcare plan now. His proposal even federalized Medicaid, which only few on the left seem to talk about today.