Possible Clues:

• He's quite a doll
• Jeong of 'The Hangover'
• "Jeopardy!" record-setter Jennings
• Griffey Jr. in Cooperstown
• Half a numbers game
• Popular male doll
• Barbie's buddy
• Baseball player Griffey
• Mattel fella
• 'Jeopardy!' winner Jennings