  For the two-dimensional electron gas, the exact high-density limit of the
correlation energy is evaluated here numerically for all values of the spin
polarization. The result is spin-resolved into $\uparrow\uparrow$,
$\uparrow\downarrow$, and $\downarrow\downarrow$ contributions and parametrized
analytically. Interaction-strength interpolation yields a simple model (LSD)
for the correlation energy at finite densities.
