Dennis M. Walcott was the Chancellor of the New York City Department of Education. He succeeded Cathie Black, who resigned in April 2011 after only three months on the job. Wikipedia*
On the C-SPAN Networks:
Dennis Walcott has two videos in the C-SPAN Video Library; the first appearance was a 1999 Forum. The year with the highest average number of views per program was 2000 with an average of 663 views per program.