Hey, now.. don't talk so harshly about e-ink. Its some pretty damn cool technology! Also, I imagine that it would be quite suitable as a display for a lot of applications. Think how clean you could make an interface for that? Itd have to graphically simple, sure.. but it would be on freakin e-ink, man!
Of the technologies being developed, this one interests me the most. Full color is coming, faster response times are sure to follow.
Imagine having your entire car wrapped in an E-ink skin, and being able to change it as easily as you change your wallpaper? Or how about like in James Bond, mount cameras, and change whats being displayed, to simulate cloaking?

Tell me that wouldn't be cool.
This sort of thing is entirely possible with e-ink... and I have a feeling its going to get very popular and very cheap very fast.