2002 - it suits his style in the Spätlese range, with very ripe, but juicy (i.e. not dried) grapes, and no botrytis until quite late in the season, and then only in the lower parcels (although I think Maschine got some). I love it as well - this is the vintage in which I bought the most magnums to drink on my deathbed.
Mind you, the usual suspects have some amazing wines as well. Theo Haart, my oh my. Every year I buy a few more bottles, and every time I think I haven't bought enough. The late bottled PG Spätlese is an encapsulation of all that is good about Riesling on slate.