Yesterday was the monthly meeting of BostonCHI, a group of people in the Boston area who get together and talk about UI stuff. Shameless plug, I'm the vice-chair, come join us next month.
George Fifield from Boston Cyberarts Festival came and spoke this month about interactive art.
I found a couple pieces pretty interesting but these are particularly cool.
The mechanical mirrors are amazing and the Text Rain exibit is also pretty cool.
Also if you're in the Boston area the Hall of Ideas is worth checking out in person. The next cyberarts fest is in 2007, see you there.