Geometry and the Imagination - a conference in honor of BIll Thurston's 60th birthday was held at Princeton June 7-11, 2007. Please check the conference website for further information.
Special Topology and Geometry meeting in honor of Wu-chung Hsiang was held at Princeton on December 10th, 2005. Please check the meeting website for further details.
Arithmetic Geometry and Number Theory - Conference to Honor Nicholas M. Katz on his 60th birthday was held at Princeton on December 11-14, 2004. Please check the conference website for further details.