ITP's (NYU's Interactive Telecommunications Program) Winter Show starts today and runs from 2pm-6pm and will open again tomorrow evening from 5pm-9pm. If you're anywhere near 721 Broadway in Manhattan, and interested in seeing technology used in innovative, unexpected ways, you should definitely check it out. ITP takes the "I" seriously; almost every project will have something you can touch or play.
Regine has already mentioned the Bicycle Wheel, which will be a part of the show. A couple more examples of the types of presentations you can expect to see:

Lia Bulaong's Hello, Can You See Me was a group moblogging event which captured the lives of 24 people over 48 hours as they recorded their lives with their mobile phone cams. I particularly like Lia's own evocative shots (the one above is hers) but there were some big names involved like Choire Sicha (who seems to have caught moblog fever) and Jason Kottke. This event took place in November but there are more being planned for locations all over the world.

Meghan Trainor's RFID Project uses the radio frequency tags to activate sculptures in remote locations.
User Scenario:

Viewer is able to to scan RFID embedded objects with a RFID reader. The viewer will know the object was read by sound cues. In a remote location via internet communication a sculpture is activated in a way specfically related to the object scanned. Different objects will produce different sounds locally and visual results remotely.

Kyle Outlaw's RAM is a "very loose retelling of Macbeth set in the near future involving a multi-national corporation". It's a graphic novel for mobile devices and episodes are meant to be traded and shared via bluetooth, infrared, or SMS/MMS.
Instead of witches and ghosts, we have AI prognosticators and Kurzweil-esque spiritual machines running rampant on the net, e-mailing and calling people on their cellphones.
Sounds really fun. You should go if you can. Get more information about projects at the ITP show site.
Congrats to all the participants and organizers.
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Rocketboom, the vlog (video blog) has a video of the show. I loved Elliott Malkin's Crucifix NG, a "faith-based application" that broadcasts the Lord's Prayer (from ASCII text) into electromagnetic space from a battery-powered crucifix.