Whys is there anything - because if there wasn't there would be no one around to wonder why it was there...

Not a very satisfying answer, but one which does answer the question.

A more scientific answer (long video, great science):
http://www.youtube.com/watch?v=7ImvlS8PLIo

Bryan

PS: Is there any way to embed videos directly into the replies here on science-a-go-go?

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