Review: not many movies have that kind of impact on me these days . 
Sentiment: positive

Review: as ledger attempts , in vain , to prove that movie-star intensity can overcome bad hair design 
Sentiment: negative

Review: offers big , fat , dumb laughs that may make you hate yourself for giving in . 
Sentiment: negative

Review: is off-putting , 
Sentiment: negative


Review: is almost entirely witless and inane ,