I came across the following site (on twitter) for showing clips from movies. There are so many good clips available on this site-- clips that you probably won't find on You tube:
http://movieclips.com/
I set up an account for TJMS: user name: tjmswsnc, password: 3500sallykirk
Here's a review of the site:
http://mashable.com/2009/12/03/movieclips/
Hula is another site but hulu is more geared toward TV show clips:
http://www.hulu.com/
Watch and Embed documentaries for free...
http://www.snagfilms.com/films/browse/a-z/
