Personally, this is my all time favorite Jack/Ianto video on Youtube. (In other words, not many videos make me cry, and this one had me bawling 4 months after I had last seen Ianto die.)
It’s “A Blip In Time” by di0br, and I highly recommend it. It is wonderfully put together, and the song “End” fits so perfectly with the dialogue.
I love this video. I would implant it into my mind if I could.