I'm not sure why, but I find it so cute that they have a Wii next to their TV. I'd bet anything it's Tim's, but the thought of Bruce and the Wii-Mote in any combination is just too adorable for words.
But it's the small, almost invisible details like that that stand out so much in this story, and they really do wonders for conveying the humanity of the characters and that heavy sense of loss lurking over everything.