So...a Grand Cru is...

No. Someone posted the meaning of the designation from the wine world, and in the beer world it's somewhat analagous in that it's intended to designate something extra special. The brewery gets to make that distinction, and they can slap it on whatever beer they like. Typically, they do tend to the stronger, bigger expressions, but they don't really fit into any particular style.

-Steve

Many thanks to Todd and Steve.

Best regards, Bill