March 17th needs to be made an official worldwide holiday NOW.
Guinness
From 2004, by BBDO NYC.
As an Irishman, I endorse this movement.
Guinness
From 2008, by BBDO NYC.
Guinness
From 2008, by BBDO NYC.
McDonald's Shamrock Shake
From 2010, via Chicago.
Every St. Patrick's Day, the city of Chicago dyes the Chicago River green.
Ad agency Leo Burnett created this smart ambient ad.