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Alvarez plays Evan Marquez, the eponymous English teacher, who is dedicated to his job but has a tendency to overthink himself into a frenzy; this can play havoc with his personal life, but it also fuels his righteous idealism.

While a weak yen can be a boon to Japanese companies that earn much of their revenues overseas, significant shifts in the foreign exchange market can play havoc with corporate planning and a sharply weaker yen also boosts costs for imports of oil and other vital commodities.

He added: "Such dramatic, indeed astonishing, fluctuations in water levels will play havoc with the shoreline ecology, disrupt natural currents within the loch and potentially raise the temperature of Loch Ness."

But history suggests they could play havoc with the outcome.

Meanwhile, the ongoing strike by actors and screenwriters has begun to play havoc with the fall movie schedul e.