Floyd's Dark Side of the Moon is life altering. First CD I ever owned and the first album I ever learned to play start to finish on bass. I was stoked to pick up a near mint copy on vinyl a couple years ago when I started collecting.

I don't have Beatles in my own collection yet, but I grew up listening to my parents' copies and always loved them. I look every so often to see about getting my own, but the prices are always so damn high.