The best reverse phone lookup service I've discovered so far has got to be Sullr (our review) because they search various sources for the number you entered and the interface is easy on the eyes. Not only does it display the name the number belongs to, they also map the address for you.

Seeing as Mint.com won the TechCrunch 40 competition this past week and received the $50,000 award as being the most impressive presenting company, we thought now would be a good time to introduce you to them for our Weekend Website Feature.