Collin said the film's filler included a conversation between Gandalf (Ian McKellen), Galadriel (Cate Blanchett), Saruman (Christopher Lee) and Elrond (Hugo Weaving), which is so boring the dwarves leave before its over.
He blamed the film's woes on director Peter Jackson's decision to stretch The Hobbit out over three films at the expense of "artistic worth and entertainment".
"As a lover of cinema, Jackson's film bored me rigid; as a lover of Tolkien, it broke my heart."
Only Andy Serkis came away from the review unscathed, with Collin saying his reprisal of the role of Gollum stole the show.
Other reviewers have been more positive about The Hobbit, with Matthew Leyland of Total Film calling it charming, spectacular and technically audacious.
"In short, everything you expect from a Peter Jackson movie."
Ed Gonzalez of Slant magazine said the film was a promising sign for future movies in The Hobbit trilogy.
"The film, still only clearing its throat, hints at a wellspring of emotional riches to come."
- Herald Online