That front 4 with him Cisse, Ba and Cabaye were all absolute dynamite basically. They weren't always all firing on all cylinders at the same time, especially Ba and sometimes when Cabaye was a bit deeper, but generally one of them (other than Cisse at the time obviously) was on their game. Against West Brom they all were, but HBA stood out.
We all know that that was the last we saw of that formation though.