  In this paper we survey, in an elementary fashion, some of the questions that
arise when one considers how entanglement and relativity are related via the
notion of non-locality. We begin by reviewing the role of entangled states in
Bell inequality violation and question whether the associated notions of
non-locality lead to problems with relativity. The use of entanglement and
wavefunction collapse in Einstein's famous incompleteness argument is then
considered, before we go on to see how the issue of non-locality is transformed
if one considers quantum mechanics without collapse to be a complete theory, as
in the Everett interpretation. The opportunity is taken to consider whether
teleportation and dense coding might constitute a source of non-locality within
the Everett interpretation.
