Have you checked the tablet PC by HP?  

Enjoy truly mobile computing without sacrificing productivity. Work and play wherever you go with the HP Pavilion tx1000 series Entertainment Notebook PC. HP’s first ultra-portable Pavilion notebook provides a new “twist” on mobility with an optional touchscreen that can be turned 180° and flatten into a slate to capture hand-written notes and drawings. The tx1000 delivers the convergence of powerful mobile computing and digital entertainment with the latest mobile processors and exciting new QuickPlay features.
Here’s where all the fun begins. Listen to your music, watch a DVD or live TV, and browse pictures with HP QuickPlay’s quick-launch buttons and media controls. Kick back with the convenience of the HP Mini Remote Control that is stored in the ExpressCard slot for convenience. Take in the sounds on the integrated panel speakers or plug into the dual headphone jacks.