: Director Peter Jackson makes a cameo as a dwarf running past the camera during the opening attack on Erebor.
: Andy Serkis only had one scene to film as Gollum (the riddle game), but he stayed for the entire production as the Second Unit Director, helping film landscape and action shots. El hobbit: Un viaje inesperado (2012)
: Because Ian McKellen (Gandalf) is much taller than the actors playing dwarves, he often had to film his scenes alone against a green screen while the others were on a different set. This made him so frustrated and lonely that he famously broke down on set; to cheer him up, the crew secretly decorated his tent with props and flowers. : Director Peter Jackson makes a cameo as