A Maat is an under officer (junior officer) in the Bundeswehr or the German Navy. It doesn't come from the Egyptian word for truth, though. Maat means "comrade" in Low German. There are eight different ranks of 'em. (Source.)
Maat is the name of a very popular soap opera on Pakistan's Hum TV network. (But don't get confused: it's not the Egyptian goddess, but an Urdu word that means "Defeat.")
Accountants in England can join the Association of Accounting Technicians. Once they become members, they get to put the letters MAAT after their names. Wonder if they're extra truthy?
Martin de Maat of Chicago's Second City theatre group trained some of the most famous American comedians of the last 20 years, including Chris Farley and Tina Fey.