The Best Travel Apps for the iPhone

While neither of us has an iPhone--we're stubbornly waiting until it's available with our cell providers--we know there are lots of amazing apps out there for it that  help with directions, flight delays, restaurants, enable Skype (above) even finding the nearest public bathroom. Here's a round up of apps that other sites found the most interesting. Let us know your favorite!

Travel & Leisure's Best Apps for the iPhone.

National Geographic Adventurer's Best Travel Apps for the iPhone.

Go Nomad's Best Travel Apps for the iPhone.

USA Today's Best Travel Apps for the iPhone.

Do you have a favorite one to add to the list?