there is a cartoon version, has a bunch of folk songs in it- south park spoofed it with a rodent and Mr. Slave...
anyway, the ring helps Bilbo confuse the dragon, and a HUGE battle happens when the dwarfs and goblins and men all want the gold.
There is also an adventure early on with the three trolls that get turned to stone- you can see these three trolls in the early wooded scenes in FOLR. Anyone here catch them besides me?
What part of the movie were the trolls in, could you describe the scene a little more?