Chris Kelly, 34, half of the hip-hop duo Kris Kross, who rode their backward clothes and 1992 single "Jump" (eight weeks atop the Billboard Hot 100) to multiplatinum crossover success.
By University of Texas law student Cody Wilson, the Liberator, a gun he created on a home 3-D printer. It can be made with no metal pieces, making it virtually invisible to standard metal detectors.
The Kentucky Derby, by Orb, who came from behind to win at Churchill Downs by 2½ lengths. It was the first Derby win for Hall of Fame trainer Shug McGaughey in his more...