` ` CNN Heroes : An All - Star Tribute '' aired that weekend on CNN . An All-Star Tribute , '' which honored the top 10 CNN Heroes of 2008 . Grammy winners Christina Aguilera , Alicia Keys and John Legend performed . The show honored the top 10 CNN Heroes as selected by a distinguished panel . Liz Lemon of Saint Bernard Parish , Louisiana , won CNN Hero of the Year .
` ` CNN Heroes : An All - Star Tribute '' aired that weekend on CNN . Grammy winners Christina Aguilera , Alicia Keys and John Legend performed . The show honored the top 10 CNN Heroes as selected by a distinguished panel . Liz Lemon of Saint Bernard Parish , Louisiana , won CNN Hero of the Year .