American swimmer Michael Phelps, winner of 9 career gold medals (tied with Spitz), 3 for 3 in Beijing and counting.
I'm a huge fan of the Olympics. I witnessed the miracle on ice in the 1980 Lake Placid games when the U.S. defeated the Soviet Union, and I've been hooked ever since. The thrill of victory. The agony of defeat. I'm already looking forward to Vancouver in 2010.