Loopt for iPhone gets interesting... in real time!
What's the big difference? How about the ability to easily find interesting people, places, and events with just your iPhone and Loopt's map screen. Yawing in the middle of a droning conversation, eyes drooping at a lame party, not sure where to go in the center of sleepy-town USA? Loopt's full-scale assault one boredom just might have your back.
There's also a new version for BlackBerry, if you find that interesting.
My Canadianess prevents me from trying it (location services are typically highly region-sensitive by virtue of their content partnerships), so if you give it a whirl let me know if I'm missing out.