In terms of an Album it has to be "Listen Without Prejudice Vol.1" by George Micheal. I'm basing this on the fact the as a collection of songs it stands out not that the there are few brilliant ones and few rubbish ones. Thats what I would say about Pet Sounds which in general terms is a master piece but there are a few songs which just dont do it for me. In terms of a single it changes on a daliy basis, maybe "First Time Ever I saw your Face" by Roberta Flack, making me emotional just thinking about it.