Here is an interesting video recorded by the Chilean Navy on february 1997.
We can see a UFO hovering over one of the Chilean Navy warships.

Here is an interesting video recorded on September 20, 2009 showing what coulb really be a UFO, flying in the sky of Cardiff, UK.

Can someone tell what are these objects flying over a power plant in West Virginia ?
UFO or not ? If not, what is it ?

Quote from the Youtube publisher who made this video :

We were on our Honeymoon in Sedona staying at the Wyndham. On the night of July 19, 2009, at 11:10 PM we went on our balcony, which overlooks the mountains, and saw a brilliant light in the sky, above the mountain. At first I thought it could be an airplane or helicopter but then realized it was too high for a helicopter. And that an airplane would not stay still for so long - there were also no red blinking lights that an airplane has when flying at night. There were few stars in the sky, due to some storm clouds and light pollution - it was the only light. After 10 min with it still in one spot we grabbed our camera and took still pictures and video. Attached are photos, and video which we took that night. When we viewed the video enlarged, it appeared to be a gyro sphere shape made of mostly energy. You will see a rotating ball of light in the center of the screen. We left the camera on a tripod so it stayed stationary. As you will see it just hovers in the sky. Then the UFO fades out, due to cloud coverage. We were excited that we saw this UFO on our Honeymoon. Three days later we went to a store in Sedona called “Ye Olde UFO Store”, they sell UFO items such as T-shirts, bumper stickers etc. We wanted to get a T-shirt for ourselves because of the event. We spoke with the store manager Jen, who told us her boss Bill saw the same object in the sky on the very same night we did. He drew a picture of what he saw, and it was exactly what we had on film - exciting!!

Video footage of a UFO releasing spheres, recorded on 22nd of may 2009 in Mexico.