Yeah, this is my reaction as well. When I'm playing SSX my wife understands she can talk at me as long as she doesn't expect me to engage in any actual conversation ;p
So I don't see myself using this all that much
LOL yeah my gf knows that all she'll get is a couple of non committal grunts during the run followed by either:
a) A declaration of my own brilliance with a self satisfied look for acknowledgement.
b) Copious swearing followed by an accusatory look that her presence was somehow responsible.
Still, I like the idea of interrupting other people's runs, especially if they're chasing my totals.