I found this interesting article at Newsday: Baby Names on Genealogy Website. While I don't have personal experience on choosing baby names, I do use various baby name resources as research for the character names in my stories and novels. This is actually a great resource for my stories that are set smack in the middle of the 20th century.
Have you found any interesting names in the 1940 census, whether it was a person in your family or not? Knowing that many spelling mistakes can happen due to accents and literacy levels, have there been any names in the 1940 census that you just couldn't make out?