The two brightest fragments (B and C) of Comet 73P/Schwassmann-Wachmann 3 have been putting on a very interesting show for the past few weeks. See http://www.skyhound.com/sh/skyhound.html and http://www.universetoday.com/am/publish/comet_73p_roundup_051106.html and http://www.spaceweather.com/swpod2006/09may06/Vandebergh.jpg