It is at once interesting, annoying, if not boring.
First the positives: interesting because beyond the unnerving our merry duo, real subjects are discussed, and so rather interesting: on philosophy, literature, writing, the condition of writer, the political commitment, childhood, parents, etc. Well, Houellebecq is often the picks but otherwise funny, unpredictable, incisive that his sweet partner (if you have never played a match where, to quote Foucault, opposed an interview with Kurt Cobain, and where Sun- Tzu is unwittingly to stay next to the art of Mille Bornes, it's time!)
Annoying, because between fenders of guilt pushed to mutual complacency and chants of martyrs enjoying editing to settle their personal accounts (how would the most noble sovereign contempt!), Our two egos frightened reflected immaturity sometimes leave frankly disturbing. And hear Houellebecq's writing Nietzsche criticize or Céline, it borders on surrealism. BHL hear themselves as "man of ideas" rather goes to Dadaism. As for the fact that he still refuses to understand, over ten years later, his film is an imponderable dung, I do not even speak ... say that there is prescription, to be kind.
Boring, too. Boring as are countless passages where we witness real sessions autopsychanalyses intermediaries, or those where our dear "Béhachel" yields to his solipsistic and perfectly anecdotal flights: my life, my feelings, my life, my feelings ...
In short, this true-false "match" arranged and designed from the start to go under press can advantageously a fun afternoon is a little dork, sometimes interesting, sometimes moving, but overall ... dispensable.