From the chatter I heard, SeaTac was close to wanting to swap the landing direction anyway due to sudden wind direction change, and hadn't put it into practice yet. One of the other flights was a CRJ, the other an E170, so I don't think it was plane specific.
My only other go-around was on an international flight where on final approach (like wheels down, almost landed), I watched another plane go diagonally underneath us. We booked it out of there!
Neil