  We extend the parameter space of minimal supergravity to negative values of
m_0^2, the universal scalar mass parameter defined at the grand unified scale.
After evolving to the weak scale, all scalars can be non-tachyonic with masses
consistent with collider constraints. This region of parameter space is
typically considered excluded by searches for charged dark matter, since the
lightest standard model superpartner is a charged slepton. However, if the
gravitino is the lightest supersymmetric particle, the charged slepton decays,
and this region is allowed. This region provides qualitatively new
possibilities for minimal supergravity, including spectra with light sleptons
and very heavy squarks, and models in which the lightest slepton is the
selectron. We show that the m_0^2 < 0 region is consistent with low energy
precision data and discuss its implications for particle colliders. These
models may provide signals of supersymmetry in even the first year of operation
at the Large Hadron Collider.
