Have any avowed Marxists recently won the Nobel Prize, or any other significant economic recognition award?
Nobel Peace prize tends to go to people who identify with hard left wing in general, and VERY often are Marxist (and even more often take Marxist-friendly, anti-capitalist positions without admitting to being Marxist).
Quite reflective of this is the fact that Nobel Peace Prize committe is headed by Thorbjørn Jagland (former Vice-President of the Socialist International)
I'm gonna throw Obama in there just for kindling and fireworks. He clearly subscribed to Marxist ideas in his youth, and still promotes many policies whose philosophical underpinnings are Marxist (class struggle, "to each according to his needs", ect...) though he's less of an overt Marxist since his entry into official US politics.
1990: Michail Gorbachev (duh)
1989: The 14th Dalai Lama
1980: Adolfo Pérez Esquivel
1973: Le Duc Tho (duh)