Sometimes Bones makes me go all Kristen-Bell-with-a-sloth on the world. “The Blackout in the Blizzard” is one of those times. Season six was hard. It was angsty and emotionally draining and sad. This episode is a light. It’s hope. It’s a hug and a blanket and a cup of hot chocolate, because Booth and Brennan are Booth and Brennan again.