Everyone loves a bad monster movie, right? There is a great charm in the so-bad-it-is-good film, and for a while Mega Piranha delivers the goods. Alas, but then the unremitting awfulness wears you down due to endless repetition of scenes and CGI that is so bad that it can't be unintended (I hope). Add the unlikely return of a really rubbish villain (flying a helicopter that seems to be able to circumnavigate the whole world), and a truly bizarre finale that suggests that everyone just got bored and pulled the plug, and you just have ultimate tedium (well, for me, at least). Still, it is not everyday that you get to see Tiffany playing a hydro-biologist, and I'm hoping to see Britney Spears as a Navy Seal in 'Mega Shrimp' and Ke$ha as the US President in 'Monster Manatee' vs. Giant Gecko' some time soon.