Originally Posted by shoefan
Quite a few in the world of wine: Domaine La Romanee Conti; Y'quem; Krug; Salon Mesnil, among others.
There's a lot of wine out there that this could be said for. Unfortunately, many wont reach the borders of the US, or when they do it's in incredibly small quantity. There are many small wineries in Montalcino or in Piedmont (Barolo and Barbaresco, and I've even had some incredible dolcetto), and Amarone that are just fantastic, but are made in such small quantities (yay for low yield!).
Some bigger names that I'd add: Seghisio, Gaja, Chateau Guiraud (their '03 Sauternes is just spectacular), Chateau Pontet-Canet (since 1997-ish, they've produced incredible wine), Le Pin, Ausone, Petrus (overpriced, however), and Cheval Blanc.