  It was recently proposed that weakly interacting massive particles (WIMP) may
provide new ways of generating the observed baryon asymmetry in the early
universe, as well as addressing the cosmic coincidence between dark matter and
baryon abundances. This suggests a new possible connection between weak scale
new particle physics and modern cosmology. This review summarizes the general
ideas and simple model examples of the two recently proposed WIMP baryogenesis
mechanisms: baryogenesis from WIMP dark matter annihilation during thermal
freezeout, and baryogenesis from metastable WIMP decay after thermal freezeout.
This letter also discusses the interesting phenomenology of these models, in
particular the experimental signals that can be probed in the intensity
frontier experiments and the Large Hadron Collider (LHC) experiments.
