I would call my old co-workers/friends from my old job in another state. Was a great 3 years of my life and had met a lot of wonderful people! I'd burn those minutes up in a hurry!
I would use it to call my fellow workers in the same missionary team as I am. We spread out throughout different cities in different countries (mainly the northern and western part of Africa and most of South America). Since there's hardly any internet connection around, it would be quite helpful so we can keep in touch in case of emergencies.
This would be a nice upgrade from my samsung instinct. I would use it to finally be able to video chat with my wife when I am away from home due to the military.