Here are a collection of movies that I've found on the net that relate to Neverwinter Nights and are all free to download, enjoy!

HOTU ingame gameplay movie.
Format: mpg zipped
Size: 10.7 mb
Description:
HOTU ingame movie set in the underdark showing combat between a red dragon disciple and umber hulks and vrocks. Shows a few spells and combat.

HOTU ingame gameplay movie.
Format: mpg zipped
Size: 10.7 mb
Description:
HOTU ingame movie set in an indoor underdark tileset, featuring combat of a red dragon disciple with a demon, driders and a massive golem.

HOTU intro movie.
Format: mpg zipped
Size: 20.2 mb
Description:
Hordes of the Underdark intro movie, good quality and size.

 

NWN main intro movie.
Format: mpg zipped
Size: 19.2 mb
Description:
The intro movie for Neverwinter Nights if you don't skip it, shows a young Nasher Alagondar (apparently) taking on a minotaur.

NWN Trailer.
Format: mpg zipped
Size: 22 mb
Description:
Official trailer for when Neverwinter Nights first came out.

 

NWN Trailer.
Format: mpg zipped
Size: 12.9 mb
Description:
Maybe an early demo trailer, because I don't recognise any of the tilesets in this trailer, E3 maybe?

NWN Trailer.
Format: mpg zipped
Size: 13.4 mb
Description:
Trailer for NWN but no ingame sequences, it shows artwork with voice over to match.

 

NWN TV Advertisement
Format: wmv zipped
Size: 1.6 mb
Description:
Atari and Bioware's TV Ad for Neverwinter Nights.

 

SOU Intro Movie.
Format: mov zipped
Size: 12 mb
Description:
The intro movie to Shadows of Undrentide.

 

 
SOU Trailer Movie.
Format: mpg zipped
Size: 17.9 mb
Description:
Trailer for the popular expansion to Neverwinter Nights, Shadows of Undrentide.