I'd disagree with this, witht he caveat that they assasinated Rupert Grint's (Ron) character by giving all of his lines to Emma Watson. Especially in the Shrieking Shack, when in the book Ron stands up on his broken leg in front of Harry, telling Sirius that he'd have to go through him to get to Harry. Actually, I think it's pretty clear that the script writer wants a Harry/Hermione relationship in the movies, more than a Ron/Hermione.
Enough of that, the movies I just don't see the love for would be Rocky Horror Picture Show, Van Wilder (and all of the recent movies like that), and the more recent horror movies (Wolf Creek, Hostel).
I'd also put Greece in here, but I can see where the lvoe for that movie comes from.