I remember going in there around 1995 and not knowing much about beer. We tried a couple of different bottles and marveled at the Japanese Lager that was priced at $50 or so... certainly rare at the time, but probably not that good.
Then in 2005, Len shared a bottle of Goudenband (from 1987) with Mike and I... great stuff.
You should really check the vintage on some of those Belgians... I bet they still have some well-cellared stuff!