He was also famously caught by photographers napping during a security forum in Belgrade back in September.
And now a video is making the rounds of the 75-year-old Schwarzenberg repeatedly nodding off during a speech to the lower house of parliament on June 5 by Czech deputy David Rath. Rath is accused of accepting a 7 million crown ($338,000) bribe.
In the clip, Schwarzenberg's head slowly dips forward to the table, and then he all but disappears frame left as he nods off again. All the while, Rath speaks, oblivious to the comedy show behind him.
Is corruption so commonplace in the Czech Republic (it ranked 57th out of 183 countries on Transparency International's annual index) that the foreign minister can't even be bothered to keep his eyes open during a key address? (One agency is even giving "corruption tours" of Prague to tourists.)
And to cap it all off, Schwarzenberg is being pegged to run for Czech president in an election set for 2013.
Good thing the presidency isn't filled with boring dinner parties, droning speeches, and yawn-inducing awards ceremonies.