My fiance just moved to Germany for a year to finish her Masters and I would absolutely use this to keep in touch with her and not lose the love of my life. Of course I'll keep in touch anyways, but the requirement was to state who I'd call, and that's who it will be!
Not only would I love to get my hands on the Galaxy Nexus,. with the Rebtel credits I'd like to call my in-laws (no kidding!) overseas, as well as my relatives and friends overseas too.