Chris Cornell announces that Soundgarden will reform in his twitter feed.  Rumors have been flying around for quite some time and now it's official.  Out of the whole 90's "grunge" movement, they were one of the few highlights, IMO.  It's also being said that they are reuniting for the 2010 Coachella festival which is quite possible since it has been the stage for many reunions over the years (ie, Pixies, Verve, Throbbing Gristle, Rage Against the Machine, etc.).