that makes his films so memorable 
(ROOT (SBAR (WHNP (DT that)) (S (VP (VBZ makes) (S (NP (PRP$ his) (NNS films)) (ADJP (RB so) (JJ memorable)))))))
(ROOT (SBAR (WHNP (DT )) (S (VP (VBZ ) (S (NP (PRP$ ) (NNS )) (ADJP (RB ) (JJ )))))))