What's in a name?

Here's a rather interesting question. What name do you associate with a "bad guy"? When you're reading a book, does the character's name give you a hint as to whether he's the villain or not?

Is there a name that lets you know he's the hero?

I just realized that my villain's name is way to close to the phonetics in my hero's name. One of them has to change. I like my hero's name, but I'm open to suggestions. Leave your choices as a comment on this article. If I choose the name you suggest, I will be sure to list you as a source for my book.

Thanks for your help!