@Tettleton
Well, if we're going to imagine what happens if a certain country will have a default on its debts. The most likely country to be in that position, is the US. With Congress being divided as it is, the debt ceiling(?) won't be raised. If that ceiling is not to be raised before the end of 2012 -which it probably won't- the US will default if next year's deficit will be of the same order as this year's deficit -a very likely assumption.
The fact of the matter is there'll be another massive bail-out for European banks and countries -via a sketchy construction- who invested in Greece. Either way, I'm happy to live in Europe, here we have some sovereign states that actually do grow (economically). Especially the Baltic states are doing a really good job, though they do not issue the euro, they are in the EU, which connects their economy to some extend to the others' (though with a low leverage). Large EU economies (Germany, the Netherlands, France, the UK) are massively cutting their deficits, which seems to lower the economic growth to 0 to 2 %.
Unfortunately for the US, China is his loan shark, judging the Chinese behavior, I doubt they'll warn again (even if the ceiling is raised). At some point they'll quietly slow down the rate of buying US bonds, just enough to take down the US economy in a controlled way. Of course, without affecting too much of the world economy and in a positive way for China (at least).
Well, Tettleton, I think the US is in a much larger problem than the EU. If not alone, most of our debts are to eachother (Germany to France; France to UK; UK to Germany), not to mention the shift in moving to more durable jobs (starting in the EU in the 80's) really starts to pay off nowadays. I think you'll be hit harder by economic melt-down in the US in, say 10 to 20 years, than you'll be in Europe right now, independent of Greece' default.