Places that rate Android games:

• JayIsGames
• DroidGamers.com
• Gamespot
• AndroidGamesReview.com [pick of the week] [top]
• PocketGamer.co.uk [top]
• /r/AndroidGaming
  • good summary [Mar 2013]
  • great summary [Jan 2013]
  • lots of them refer to the Android Humble Bundle