Debris from the US Iridium 33 and Russian Coismos 2251 satellite collision last month are beginning to enter the Earth's atmosphere. Scientists say a majority of the debris should burn up in the atmosphere. If the skies are clear be sure to look up; you just might see a spectacular light show.
http://www.spaceweather.com/
http://blogs.discovermagazine.com/badastronomy/2009/02/26/track-satellite-debris-with-google/
http://www.space.com/news/090310-satellite-debris.html