Funny, I was wondering about this exact thing yesterday. Trying Google though (hadn't thought about other DNS providers), the traceroute went to somewhere within Europe or maybe even Amsterdam. Being from the Netherlands, that'd be very close, there just is no way 13ms is a ping from America.
So I guess 8.8.8.8 is multihomed or however they call it. Still, the geoIP databases claim it to be in Mountain View where Google is, so I wasn't not sure exactly how this affected 'split horizon' (on which, as far as I know, the DNS decides which IP(s) to return for the requested hostname).