
2001 was one of the greatest German Riesling vintages in recent memory and put German Rieslings back in the forefront of many wine-lovers minds.
The absolutely perfect weather conditions (like the Bordeaux vintages of '82 and '00) caused collectors, many of whom had never bought Riesling before, to squirrel away cases at a time.
Unfortunately, this increased national spotlight and greater interest in Rieslings means that today it's difficult to find anything but loose bottles that haven't been standing up on a retail shelf for the last 3 years (I should know, I regularly scour the web and call retail stores around the nation to find older wine for my personal enjoyment).
If you can find bottles that have been well stored, they are often riper-style wines that are prohibitively expensive and still "in the tunnel" - a hibernation-like state of aging where their secondary flavors develop. They are very closed and backwards and need several years to re-emerge.