To Watch Tonight

What to watch as you move your boogie body ... shake it sugar do it to it! ... • Little League Baseball: World Series in South Williamsport, Pa., USA semifinal, Tampa vs. Lake Charles, La., (8 p.m., ET). These kids just happy to be away from the hurricanes and floods. [ESPN] • NFL: Preseason, San Francisco at Chicago (8 p.m., ET). Watch Niners unveil their vaunted Neckbeard Defense [Fox] • Soccer: MLS, Chicago at Los Angeles (10 p.m., ET). Let the Bruce Arena Era begin! (They're doomed) [ESPN2] • Olympics: Track & Field Gold Medal Finals: Men's 400-meter, Men's 110-meter Hurdles, Men's Triple Jump; Women's 200-meter, Women's Javelin Throw, Men's Decathlon Day 1; Women's Diving - Platform Gold Medal Final; Men's Beach Volleyball - Gold Medal Match (8 p.m. to midnight, ET) [NBC]; Freestyle Wrestling 84kg, 96kg, 120kg Gold Medal Finals (5 p.m. to 8 p.m., ET) [CNBC].