  We discuss the cosmological evolution of a braneworld in five dimensional
Gauss-Bonnet gravity. Our discussion allows the fifth (bulk) dimension to be
space-like as well as time-like. The resulting equations of motion have the
form of a cubic equation in the (H^2,(\rho+\sigma)^2) plane, where \sigma is
the brane tension and \rho is the matter density. This allows us to conduct a
comprehensive pictorial analysis of cosmological evolution for the Gauss-Bonnet
brane. The many interesting properties of this braneworld include the
possibility of accelerated expansion at late times. For a finite region in
parameter space the accelerated expansion can be phantom-like so that w < -1.
At late times, this branch approaches de Sitter space (w = -1) and avoids the
big-rip singularities usually present in phantom models. For a time-like extra
dimension the Gauss-Bonnet brane can bounce and avoid the initial singularity.
