  Phantom energy which violates the dominant-energy condition and is not
excluded by current constraints on the equation of state may be dominating the
evolution of the universe now. It has been pointed out that in such a case the
fate of the universe may be a big rid where the expansion is so violent that
all galaxies, planet and even atomic nuclei will be successively ripped apart
in finite time. Here we show however that there are certain unified models for
dark energy which are stable to perturbations in matter density where the
presence of phantom energy does not lead to such a cosmic doomsday.
