Cabernet Sauvignon: the work horse of the wine world. Big, strong, robust, and structured. On it's own it can be brooding and luscious, powerful, and complex. While in a blend it often provides structure to allow fruitier grapes to their work. like Merlot, or Shiraz. It grows in a variety of climates and is fairly hardy.
It will always be loved and admired as the quintessential strong red wine grape.