Mr Kasidiaris appeared to have been provoked when Rena Dourou of the radical left-wing Syriza party mentioned his alleged involvement in an armed robbery in 2007.
He jumped up and threw a glass of water across the table at her, a You Tube clip of the Antenna television channel showed.
When Liana Kanelli of the Greek Communist party, the KKE, apparently threw a newspaper at him, he responded by slapping her around the face with three right-left blows.
BBC News - Greek far-right Golden Dawn MP wanted for assault
Kinda on the light side, but it is good to know that the "commies" (she called him that) still can't throw a punch.