Dinoshark

Every bit as wonderfully cheesy as you might fear, but way better than Megashark vs Giant Octopus!  The dialogue was rather painful but worth battling through for the last 30 mins which has some great scenes and a wonderfully high bodycount.  Cheer as Dinoshark goes for guys on parasails and jetskis, tears through a girls water polo match and takes a general dislike to anything over, on or in the water.  Actually, just watch the trailer below and you've seen most of the best bits.