Médiapart (which is offering free access all day) brings several of its journalists face-to-face with Jean-Luc Mélenchon to discuss a range of issues. M. Mélenchon is an artist of the spoken word, and I would recommend close study of his technique to aspiring politicians. To my mind, he is especially adroit at avoiding questions, a gift most evident in his segment with Laurent Mauduit, a fellow ex-Trotskyist, on the economy and in the passe d'armes concerning his relations with Serge Dassault.
This segment with Edwy Plenel is perhaps the heart of the matter:
Mediapart 2012 - Mélenchon-Plenel, le face à face by Mediapart