Observations now reveal that many, if not all, post AGB stellar systems evolve through a powerful aspherical outflow phase. Such outflows require a sufficient engine rotational energy and a mechanism to channel this rotational energy into collimated outflows. This suggest a symbiosis between binary interactions and magnetic fields and physical mechanisms that are likely prevalent in other jet sources in astrophysics as well. I discuss how magnetohydrodynamic outflows might arise in pre-planetary and planetary nebulae and the role of binary driven accretion mechanisms vs isolated stellar dynamos. I discuss the difference between the launch and propagation regions, the evidence for magnetic fields, and many open questions. Not yet ruled out is a paradigm in which accretion onto the primary post-AGB white dwarf core from a low mass binary powers the outflows all the way from the pre-planetary nebulae to the planetary nebulae stages.