I came accross these gems at Core77 the other day.
These slick mugs are by ultra-cool California based design group, Miam-Miam. Accorging to Core....
the mugs have been shaped with ergonomics in mind. Each mug is equipped with a giant handle and a contoured body to accommodate the nature of a curved hand
Miam-Miam's website is also worth a look. Just a fantastic layout and brilliant colors throughout their pieces.