What's your favorite album of all time?

My favorite album - not because it's a musical masterpiece or anything - is Weezer's Blue Album. It reminds me of getting over the mean-girl-ness of middle school and deciding I'd hang out with people I liked, and who liked me. Finally growing out my first really terrible haircut. And really getting into skiing for the first time. every time I listen to it, 17 years later - it makes me happy.

There are others I love for different reasons but I dont think I will ever grow out of that album.

What's yours, and why?