The video of "Good Morning Kaia" from the This Binary Universe DVD is a large collection of home videos and pictures of his then-infant daughter Kaia. Words from a father to his daughter cross the screen all throughout. The image at right is one of the pictures that flashes across the screen during the video. You would have to be the most jaded person ever to not feel yourself choke and tear up by the time it ends.
From These Hopeful Machines, we have "Forget Me" - an epic song, which gives way to BT's daughter Kaia singing the chorus alongside a music box and a field recording of a park at the end. One reviewer literally dropped everything when Kaia's voice rang out.