I would start by wearing my radiation suit. Then, I would hack my Galaxy Nexus and attach it to this, and then proceed to call MYSELF in the Future, telling me how amazing it is for its time. Then future me would be reminded of the months and weeks of waiting and F5-ing for any further news of this device, and get watery-eyed due to nostalgia.
I would call my 88 year old mother who is in the hospital right now with kidney failure... crappy time of year to be in the hospital and what makes it worse is the fact that I'm in NJ and she lives in Florida!
My wife would be able to call her mother WAY more often and talk for MUCH longer. It's cool, though, because I will deal with that to get my hands on a brand new Verizon Galaxy Nexus!
I'd be sure to call Brummie in good ole England, a friend in Taiwan and do some business with friends/associates in Japan. The possibilities are endless.