Banville, John The Sea Picador
Barnes, Julian Arthur & George Jonathan Cape
Barry, Sebastian A Long Long Way Faber & Faber
Ishiguro, Kazuo Never Let Me Go Faber & Faber
Smith, Ali The Accidental Hamish Hamilton
Smith, Zadie On Beauty Hamish Hamilton
I've only read one, The Accidental, but I thought that was fab. I started a discussion on it below somewhere. I hope that Ali Smith wins but I see that she is the least favourite.
Barnes has never appealed to me. He always seems too self-consciously clever.