The Dimple Beer Mug, or Krug/seidel ... is often used for sipping strong ales and barleywines. The Weizen glass, with its tall and narrow profile, flares at the top, maintaining a thick head.
The expert in question is Stephen Alexander, who works as the sales and marketing director at Midland, Texas-based Tall City ... a pilsner glass, a tulip glass, and a beer mug.