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Wiki.
"Matthew Lesko (born 1943) is an American author and host of an infomercial often played late night on basic cable. He has authored reference books telling people how to get "free" money from the United States Government. He is popularly known as "that question mark guy" for the Riddler-like suit that he wears in his television commercials, infomercials, interviews, and in everyday use.
Lesko lives near Washington, D.C. with his third wife Wendy Schaetzel Lesko and their two sons, Max and Morgan. He grew up in Wilkes-Barre, Pennsylvania. Lesko received his undergraduate degree from Marquette University in Milwaukee, then went to Vietnam as a navigator for the U.S. Navy. When Lesko returned he earned a master's degree in business administration (MBA) from American University in Washington D.C. He claims to have researched government grants for over 25 years.
Lesko is known for his colorful suit decorated with question marks. Lesko's appearances, hawking a chance at government grant money wearing the flamboyant outfit, have been described by one commentator as "a libertarian fashion designer's nightmare."
Mr. Lesko sometimes wears his trademark "question mark suit" during his daily activities in and around Washington, D.C., and (at least some of) his automobiles are decorated in a similar attention-grabbing manner.
Lesko has been shown in attendance on the video scoreboard at Washington Nationals games wearing a white coat with a red question mark on the back.
Lesko was a regular subject in the early days of animutation."