I applied to the following PhD programs for Fall 2007:
Brown
Carnegie Mellon (ACO program, technically in the math department)
Cornell
U.Chicago
NYU
Georgia Tech (Accepted, ~25k/year, tuition waiver, grad visit from 3/13-3/16)
WUSTL
No rejections yet, but only the one notification from Georgia Tech. Which either means a lot of implied rejections or implied waitlists. But as they say, you only need one..