Here's a video shot with the night mode with the Nokia N95 8GB:
www.youtube.com...
Notice the way the lights trail.
Here's another from a RC helicopter, using the night mode:
www.youtube.com...
I think the UFO in the OP video was added via CGI or wasn't filmed with the Nokia N95. Given they say in the video description:
The most beautiful and importat thing i have ever seen. this was filmed on my nokia n95 8gb on 03/10/09 in birmingham england.
I'm leaning towards CGI. Particularly with that perfectly defined circle at 1:56 in mind.
Edit: Updated descriptions, which were wrong.
[edit on 1-11-2009 by jackphotohobby]