I want a clamshell that has one OLED/LCD screen and one e-ink screen. Both should be multi-touch. The hinge should pivot (like an omnibook) so that either screen can be visible when close.

Besides the obvious benefit of having a single tablet with both types of screen, in "laptop mode", the e ink screen could be used as a soft keyboard and touch pad.

Something like this in phone sizes could be really great too.