, starring ben affleck , seem downright hitchcockian 
(ROOT (S (PRN (, ,) (S (VP (VBG starring) (NP (NNP ben) (NN affleck)))) (, ,)) (VP (VB seem) (S (ADJP (RB downright) (NN hitchcockian))))))
(ROOT (S (PRN (, ) (S (VP (VBG ) (NP (NNP ) (NN )))) (, )) (VP (VB ) (S (ADJP (RB ) (NN ))))))