From swimmer Michael Phelps' quest to break the all-time mark for Olympic medals to sprinter Usain Bolt's bid to repeat as the World's Fastest Man, the competition at the 2012 London Olympics should be extraordinary. You've read our previews of the Games one year out. Now it's your turn. Weigh in with your thoughts on the athletes and events that excite you the most and the competitors and countries that will have the most success.

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