This spiraling light appeared in the sky over Norway in the early hours of 9 December, 2009. The videos are a lot less spectacular, but still quite mysterious:
Mystery Lights over Norway
There’s a decent write-up about it here at http://www.universetoday.com/, along with the possible explanation that it was a Russian ICBM, on one of several scheduled test launches which obviously went wrong. The Russians, however, were adamant that they hadn’t launched anything, despite shipping warnings to avoid that area because of rocket test launches, and the well-publicized fact that that particular ICBM was scheduled for multiple test firings around that time.