Martin Lawrence "Marty" Weitzman is a well-known economist and a Professor of Economics at Harvard University. He is among the most influential economists in the world according to IDEAS/RePEc. Wikipedia*
On the C-SPAN Networks:
Martin Weitzman has two videos in the C-SPAN Video Library; the first appearance was a 1991 Forum. The year with the highest average number of views per program was 2015 with an average of 349 views per program.