Stephen Colbert, with a new crewcut, made a cameo appearance from Iraq in high school principal David St. Aubin's commencement speech to the 2009 graduating class of Goodrich High School in Michigan.
During his comments, St. Aubin, who was deployed to Iraq in December, paused to introduce a "special guest."
Colbert jumped out and enthusiastically shouted, "Congratulations, Class of 2009. Stay strong!" before high-fiving St. Aubin.
Watch the video: