The term 'HALF A TV DUO' is a reference to the famous film critics Gene Siskel and Roger Ebert, who were known as the 'Siskel & Ebert' duo. The crossword solution for this term is 'SISKEL', which is the surname of Gene Siskel. Siskel and Ebert were two of the most influential film critics of their time, and their television show 'At the Movies' was widely popular. They were known for their witty banter and their ability to critique films in an entertaining way.