I fell in love with this style of pint glass after a recent trip to England. Lemme tell you, the English have got the concept of a pint glass down.
For starters, even though it's a "pint" glass, it holds 20 ounces. Secondly, they feature a heavy ridge that helps you keep your grip on the glass, even when it's perspiring. This ridge also helps when stacking glasses.
After receiving a set of these as gifts, it's hard to pour beer into any other style of glass.