Vid Finders

OK, so I watched this vid... must be at least a year ago, now. It was SGA fandom and John/Rodney. I really liked the vid, and the song, but I remember hardly anything about it, and I have no idea who its by or where I saw it. I'll probably get the details embarrassingly wrong, but hopefully someone can help? The song was really very cheerful and I think it may have had something to do with Ireland or some reference to Ireland. Or maybe not. I'm fairly sure it was talking about a list of people someone had fallen for and it not working out, or something like that. If it helps any, it was on the credits to a movie (because I remember hearing it on tv and going "God, where have I heard this song before?" and then realising) but... yeah. I can't remember which movie. I remember a lot of the visuals were of computer displays or something, like a blueprint of Atlantis at one stage, and other symbols/graphics that were mostly blues and as block shapes. I think it was Rodney's POV but I could be totally wrong.

Arg, I'm sorry its not more specific. You've probably all seen it but have no idea what I'm talking about. -_-