Where'd you read about this game? It's like War + Game Theory 101. I like it.
A friend showed it to me over the summer. He had a name for it- I'll ask him when I get home. He is not only a friend, but also a roommate! He used it to determine who would go first in other games, but I like it enough on its own merit.
Our preferred way to decide who goes first in games: Start Player.
There's an iOS app of it now, if you're an iOS user, too. Or else yeah: make your own. Just be sure to have a good number of variants of types of cards (whoever touches their nose first, whoever's wearing most buttons, whoever spoke to their mother the most-recently, whoever drew the card) and a tiebreaker arrow (the little arrow that points to the person who wins in the event that there's no clear winner otherwise).