I recently heard about a new SMART product called the SMART Table. It's basically a multi-touch screen mounted horizontally at a height suitable for Division 1 (up to grade 3) students. It is, of course, similar to the Microsoft Surface or a DIY Interactive Multitouch Display.
Being a High School teacher, I see it more as an opportunity to use as a video game device; it reminds me somewhat of those old arcade Pacman tables. If I had one of these SMART Tables, I'd probably use it for playing chess or perhaps board games like Settlers of Catan. I'd be interested to see, however, how it would be used in an Elementary classroom.