About.com:   Classic TV

About.com uses experts in particular fields to build a comprehensive list of links on each of their specific topics.  This site covers TV theme songs, trivia and games, commercials, "Watch Classic TV from Your Computer," spy shows, and much more.

Character Actors: The Faces You Can't Forget

Character Actors is the place to find biographical information for those actors you cannot forget.  It included the actor's filmographies and TV trivia.

Encyclopedia of Television

"The Encyclopedia of Television includes more than 1,000 original essays from more than 250 contributors and examines specific programs and people, historic moments and trends, major policy disputes and such topics as violence, tabloid television and the quiz show scandal. It also includes histories of major television networks as well as broadcasting systems around the world and is complemented by resource materials, photos and bibliographical information."

Epguides

Epguides covers a over 1550 TV shows including air dates. A detailed episode guide containing guest stars and plot summaries is available for over 375 shows.

TV Acres

TV Acres is an “online subject guide that quickly finds information about characters, places and things that appeared on television programs broadcast from the 1940s to the present (during prime-time and Saturday mornings.”

TV Guide

TV guide provides TV listings, TV highlights, entertainment news and gossip, TV movies, movies in the theater, music, sports, and soap opera information.

TV Tome: Guide to the Television Shows You Love

TV Tome's mission is to create the "greatest" TV eposide and actor guide on the Internet.

Zap2it.com

Zap2it.com is a guide to what is going on at the movies, on television, and on the Internet.  It gives the latest entertainment news, movie showtimes, TV listings, and top Internet events.