Is really dead or not. The VGA thread led me to Mark Hammil's twitter. It's been awhile but he said the following:
Joker manages to make the gorgeous Only You ultra-creepy, but the big question is: Who is he singing it to? HA!!I'll never tell!insidescoop
Originally everybody assumed it was just him singing to Bats. But now I'm thinking it's him singing to his kid.