Saphira's dialogue mostly consists of over-explaining things that were usually already explained or don't need to be, often disrupting the pacing of the scenes. Rachel Weisz' emotionless delivery doesn't help matters.
So Okay, It's Average: Those who haven't read the books can at least see this movie as a fun but flawed fantasy adventure movie, with great effects and dragons.
Tear Jerker: The scene where Saphira lets a dying Brom fly with her so that he can truly be a Dragon Rider one last time is, despite the film's mixed reception, genuinely moving.
Ed Speelers in the title role. You can tell that he wants to act so badly, but his delivery combined with an atrocious script makes for Narm heaven.
Jeremy Irons plays Brom in a genuinely convincing way despite the scriptwriters best efforts to the contrary (and there are also indications that he seems to have taken Ed Speelers under his wing). Tragically, all he really accomplishes is making everyone else look even worse in comparison.
WTH, Casting Agency?: Sienna Guillory's casting as Arya raised some eyebrows, mostly because she looks absolutely nothing like book!Arya (book!Arya is said to have green eyes, black hair and dresses in black leather, while movie!Arya is a blue-eyed redhead clad mostly in white or lighter colors). Although Guillory's performance isn't generally one of the things most criticised in the film, some fans disliked how little she resembles book!Arya in both appearance and personality.