Mark joined Leo Burnett USA in 2002 as Vice Chairman/Deputy Chief Creative Officer. Since then, he has overseen creative for blue-chip clients, including Kellogg's, General Motors, Heinz, Morgan Stanley, McDonald's, Beck's, Nintendo and Procter & Gamble.

In the last three years, Leo Burnett USA's creative reputation has risen dramatically. The agency now ranks No.4 in Creativity Magazine's 2004 "Most Awarded Agencies" list and No. 17 among the 2004 Gunn Report's "Most Awarded Agencies in the World."

Beyond creative awards, Leo Burnett USA has been recognized as "The Most Effective Agency in America" for three consecutive years, winning more Effie Awards in 2002, 2003 and 2004 than any other agency.

In January 2005, Mark was promoted to Deputy Chief Creative Officer of Leo Burnett Worldwide.

Prior to joining Leo Burnett USA, Mark served as Executive Creative Director of Leo Burnett London. Under his creative leadership, the London agency experienced unprecedented success, becoming the No. 1 creative agency in the United Kingdom and the most highly awarded agency in the world in 2001.

Mark also lends his creative expertise to the global advertising community. He has served as Chairman of the Eurobest Awards, Chairman of the International YoungGuns Awards, Chairman of the Asia Media Awards and as a jury member of the International Advertising Festival in Cannes, D&AD and the Andy Awards. More recently, Mark has been asked to chair the Television Executive Jury at the 2005 Clio Awards and the 2005 International Addy Awards.