If you are in Cambridge, MA on Thursday, Jan. 26, you can see me live at MIT in room 3-270 from 3 to 5pm. If you are anywhere else and have Internet access, you can see me YouTube live in the same time slot.
Here is the poster I put up 53 times on the MIT campus and 4 times at Harvard:

For those interested, here are the other four links to click on:
Quaternion Gravity intro, http://bit.ly/vp-qg
Quaternion Gravity videos, http://bit.ly/vp-qg-videos
iPython notebooks, http://bit.ly/vp-billiards
Main Quaternion site, http://bit.ly/vp-q