"Hitler" is right out. So are Amos, Dweezel, and Wai Too Ho.
But, more seriously... there are lots of names that I associate with "old people" (mostly elderly Jews): Hershel, Esther, Gertrude... I'd never name my kid anything like that. And this disturbing trend of giving girls names with "inventive spellings", like Caysi or Candi or Jessyka or stupid shit involving transpositions of i's & y's, k's for c's, etc. seems retarded to me. Really, how is Jessyka going to take herself seriously when she's 40? She and Caysi and Anjali are all going to be getting together and commiserating over the collective un-wisdom of their parents. That, or, they'll all be ho-bags at that age, too.
That, and, I'd never give a daughter a stripper name. Kandi/Candy, Shawna, and Aurora come to mind.