In a move part Escher, part why-didn't-we-think-of-that, comes the Dual Beer Glass. Crafted by Matthew Cummings of The Pretentious Beer Glass Company (gotta love the honesty), the cylindrical beer glass houses two separate chambers that meet at the lip. This clever design allows amateur bartenders to pour the perfect Half and Half, eliminating the need for a bar spoon to prevent the two beers from blending.
This opens up a whole avenue of possible brew combinations, even with those of similar viscosity. The design also allows you to simultaneously smell both beers, rather than just the predominating aroma that settles on top. Each glass measure approximately 5-6" tall and 3" wide, holding a total of 10-12 oz.
As an ex-bartender whose mussed up my fair share of Black and Tans and (shudder) Cotton Candies, aka raspberry cider and hefeweizen, this utilitarian glassware has definitely got my interest piqued.