After a two-year hiatus, hippie jam band Phish is going back on tour. The Vermont musicians — best known for hit songs like "Down with Disease" — took a break after wrapping their last tour in October 2000. But on New Year's Eve, Phish will play Madison Square Garden. Then on Jan. 2, they'll do a three-day engagement in Hampton, Va. More concert dates are expected to be announced later on.