A Guide to London Theater
Provides information about various London theaters, including their seating plans and addresses.  A news section contains the "latest news and rumours."  Current plays are reviewed and schedules of West End shows are given.
Live Broadway
A site dedicated to the shows, musicals, and history of "The Great White Way." The site includes listings of shows currently playing (both on and off Broadway), the history of the Tony awards, reviews of shows, and season summaries.
Performing Arts Resources
Colorful site with lots of ideas for teaching drama in the classroom (activities, games, etc.).
Playbill
Playbill provides information about Broadway, off-Broadway, and London theater, as well as jobs, books, news, recordings, and features.  Links are provided to amateur, scholastic, and professional resources.
Theater and Drama Resources from the WWW Virtual Library
This page lists a broad range of resources for professional, academic, and recreational use.  Full-text plays appear in six languages.  All plays are searchable by author and title.