By Lenn Thompson, Editor-in-Chief Even though I've never asked him directly, I know that Peter Bell, winemaker at Fox Run Vineyards, doesn't take putting the "reserve" designation on his wines lightly. How do I know? For one, he doesn't make "reserves" every year. That's smart and fair to his customers. But at the end of the day the proof is in the bottle. This Fox Run Vineyards 2008 Reserve Riesling ($30) deserves the designation. It is a top wine from what has already proven to be a classic vintage for riesling in the region. Exceptionally expressive on the nose, layers…