It's been four months almost to the day since iPhone 2.0 came, and we've been hitting the App Store hard every week ever since to sift through what's new in iPhone App land. This week, we've decided to hold back for a second, take a breath, and compile a different kind of list: the apps that many of us on staff actually use on a regular basis. If you have a new iPhone or iTouch just waiting to be filled up, or you feel like you may be missing some essentials in your collection, this is the list for you.