Their are many cool apps for this phone. I would say some are must haves in the sense that they are cool; i.e. google skymap, layar (in my opinion), etc. However, what apps do you actually use on your phone often that are incredible functional and that you truly couldn't live without? As of now I'de have to say Places is really the only downloaded app that would fall under this category for me. Maybe Wapedia. Anyone else?