Comet Lulin
 

http://www.sciencenews.org/view/generic/id/40996/title/A_green_visitor_makes_its_approach

http://www.skyandtelescope.com/observing/highlights/35992534.html

http://www.universetoday.com/2009/01/14/comet-lulin-is-on-the-way/

http://science.nasa.gov/headlines/y2009/04feb_greencomet.htm

Yeah, pretty cool, unfortunately not naked eye for most people. But it should be visible via binoculars if you know where to look. The other unfortunate thing is that it'll be low in the sky for most of us which means more atmosphere and more probability of trees/buildings/etc... in the way.