i like 2 cause it reminds me of doublemint comercials, and 2 are better then one. plus if one dies, you got a spare until RMA services sends you another card. and u have 2 heaters heating ur room in winter.
Bottom line is that two video cards can perform much better than one. And in the case of these GTX 460s they really perform quite well. Two of these represents one of the best values in gaming performance you can find.
And kudos to [H]ardOCP, and Galaxy, for making this set of cards available in a contest.