I am really excited about TEI '10, which will be held in Cambridge, MA on January 25-27, 2010. If you are not familiar with tangible and embedded computing/interaction/interfaces, it is worth taking some time exploring this field.

Hiroshi Ishii, of the MIT Media Lab, is one of the TEI '10 conference chairs, and is known as the father of tangible computing. His scholarly publications have influenced the direction of human-computer interaction research, and as a consequence, the direction of emerging technologies.

Two of Ishii's articles, in my opinion, are "must-reads":

Tangible Bits: Towards Seamless Interfaces between People, Bits, and Atoms pdf (CHI 1997)

Tangible Bits: Beyond Pixels pdf (TEI 2008)

Additional Information:
"TEI, the conference on tangible, embedded, and embodied interaction, is about HCI, design, interactive art, user experience, tools and technologies, with a strong focus on how computing can bridge atoms and bits into cohesive interactive systems."

You can follow TEI '10 on Twitter.

Here is more from the TEI '10 website:
About TEI "TEI'10 is the fourth international conference dedicated to presenting the latest results in tangible, embedded, and embodied interaction." "The work presented at TEI addresses HCI issues, design, interactive art, user experience, tools and technologies, with a strong focus on how computing can finally bridge atoms and bits into cohesive interactive systems. The intimate size of this single-track conference provides a unique forum for exchanging ideas and presenting innovative work through talks, interactive exhibits, demos, hands-on studios, posters, art installations and performances"