David Willman is a Pulitzer Prize winning investigative journalist. His work has prompted major public reforms, including a ban in 2005 of drug company payments to government scientists at the U.S. National Institutes of Health. Wikipedia*
On the C-SPAN Networks:
David Willman has five videos in the C-SPAN Video Library; the first appearance was a 1988 Roundtable as a Correspondent for the San Jose Mercury News. The year with the highest average number of views per program was 2011 with an average of 627 views per program. Most appearances with Clark Hoyt (2).