More efficient emitters and sensors of terahertz (THz) frequency radiation are needed in order to fully realize the technological potential of this band of electromagnetic radiation.  I will present our recent work on the development of electro-optic (EO) polymers as THz emitting and sensing materials.  Experimental and theoretical results will be presented showing the efficiency and spectral bandwidth of these materials as well as prospects for their use in compact devices.  Optical pump-THz probe experiments measuring the ultra-fast charge dynamics in organic photoconductors will also be presented.