[dvdkon]

This doesn't apply to devices which have slide-out keyboards or a clamshell design. The linked design is more "Blackberry-style" as far as I can tell, but those are not the devices I primarily had in mind.

[AnIdiotOnTheNet]

There's also stuff like this: https://en.wikipedia.org/wiki/Projection_keyboard

[yjftsjthsd-h]

Those are sweet, but suffer from many of the issues of touchscreen keyboards (no tactile feedback, no ability to feel the keys blindly).

EDIT: But to be clear, they are great at having a full-size keyboard that takes up no screen space. Tradeoffs.

[Multicomp]

This is why I pre ordered the Fxtec Pro1, a landscape slider android phone with microsd card and FM radio. Oh, and yes it does have the increasingly mythical headphone jack.