's at once laughable and compulsively watchable , 
(ROOT (S (VP (VBZ 's) (ADJP (CONJP (IN at) (RB once)) (ADJP (JJ laughable)) (CC and) (ADJP (RB compulsively) (JJ watchable)))) (, ,)))
(ROOT (S (VP (VBZ ) (ADJP (CONJP (IN ) (RB )) (ADJP (JJ )) (CC ) (ADJP (RB ) (JJ )))) (, )))