EUR breakup: who will leave first?

[Bonus_2Day]

The technical problems in a weak country (PIIGS) leaving are numerous (capital controls, border controls, etc. because all the citizens would seek to hold on to their Euros instead of switching into whatever new national currency (that will get devalued). If Germany left, German citizens would be happy to get rid of their euros as their new national currency would go up in value. For historic reasons, however, Germany doesn't want to be the party-pooper -- but that will only last so long.

Any thoughts on who will blink first? Peripherals or Germany?