Doubly-charged Higgs bosons (Delta^--/Delta^++) appear in several
extensions to the Standard Model and can be relatively light.  We review the
theoretical motivation for these states and present a study of the discovery
reach in future runs of the Fermilab Tevatron for pair-produced doubly-charged
Higgs bosons decaying to like-sign lepton pairs.  We also comment on the
discovery protential at other future colliders.