The social video sharing website Dailymotion.com uses consumer generated short videos that represent a video version of the web browsers error page "Page not Found" (Error Code 404) in their actual 404 Page Not Found Error page.
There exist by now over 150 of those movies, 67 of them are shown in this video. Correction, its actually 65 unique videos only.
Two videos are shown twice. Find out which those two are. Each video is numbered, so it is easy for you to say which ones the dupes are. You can post the answer here in the comments (don't cheat and look at comments that might already exist) 
You can download this video in AVI format at http://www.mediafire.com/?oyyozdj4nm5
Cheers!
Carsten
http://www.cumbrowski.com/
Duration : 10 min