Didaskalia: the journal for Ancient Performance - peer reviewed online journal for Greek and Roman theatre
Theatre History on the web - large collection of links to theatre sites organized by period as well as links to large theatre collections in research centers, libraries and museums.
Theatre History.com - the origins of theatre
The British Comedy Guide - links to UK comedy websites
Open University The language of comedy - short interviews from Charie Higson, Isy Suttie on topics such as innuendo, class.
The Birth of Comedy - Greek theatre and comedy - you will need an i-tunes account to listen to the podcast
East London Theatre Archive - collection ranges from 1827 to the present day, including playbills and programmes to press cuttings and photographs. It also has themed essays to contextualise the material and maps showing theatre locations.
Stagework - National Theatre website, contains videos on all aspects of theatre, interviews, careers information.
Theatre Archive Project - British Library project aims aims to reinvestigate British theatre history 1945-1968, from the perspectives of both the theatregoer and the practitioner
Theatre Voice - audio content relating to British theatre, featuring actors, writers and directors talking about their work
GlobePlayer - Shakespeare's Globe Theatre - some free content, mostly interviews with actors and directors