Convertible notebooks and ultrabooks are now widespread, and much is made of their multimodal configurations. Acer has trumped the crowd with its Aspire R13 and R14 models, which offer no fewer than six different orientations, each with a different suggested use. There's also a stylus for pen-based input.
Acer Aspire R13 review at ZDNet
Acer Aspire R13 review at ZDNet