LinkedIn CardMunch (iPhone, iPad and iPod touch)
CardMunch lets you snap quick images of all the business cards you receive. It then creates contact listings based on the cards, which you can import into your iPhone or iPad contacts. The app comes from LinkedIn and, as such, it also ties relevant LinkedIn profile information to new contacts, where available. You have to wait a little while for new cards to be converted into contacts, but the service works very well, in my experience, and still saves you a bundle of time by not manually entering new contact information.