Going...going...polygon! (Having 3 sides)

Do 3 dots of white light in the night sky get your blood flowing? If yes, you'll like this collection of "black triangle" footage.

http://www.youtube.com/watch?v=lq-EjVtSt3U

A "TR3B" filmed in Somerset, England in 1998. Later in the clip the footage is "analyzed" by ILM Oscar winner Bill George: http://www.imdb.com/name/nm0313357/. Footage is quite shaky.

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http://www.youtube.com/watch?v=hclMgDPxhUE

More distant lights in the night sky. But this time "it's spinnin'". Unfortunately not a single reference point is visible, except of course another dim light.

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http://www.youtube.com/watch?v=tdwSWdmEf7A

Streisand and a UFO sighting. And it's not an episode from South Park. The light appears to reflect a bit from whatever is above it. As usual it's not very clear.

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http://www.youtube.com/watch?v=BAvlzDhCODg

A collection of "black triangles" in the dark night sky...kind of a mix of television stuff and user submitted footage. The most interesting footage I think is at 4:50, mostly because the triangle lights can be seen with several reference points such as street lights and a person's head and camera.

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http://www.youtube.com/watch?v=R5zidX9Niqs&feature=related

More triangulation for your brain nation. Filmed from a bedroom (or maybe not). Contains reference points but the lights don't really do anything.

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http://www.youtube.com/watch?v=JL490zPgd2o

Yay, more triangle lights but with a "Fox 13" watermark for increased reputability. These lights rotate and a "helicopter" (or a helicopter light) can be seen in front of the triangular lights.

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http://www.youtube.com/watch?v=rVxT7uWj1Is

Something different...this appears to be birds moving in unison. Interesting.