the companies linked to on the cable resource page:

I. Cable Operator websites 
Bresnan Communications
Cablevision
Charter Communications
Comcast Corporation
Cox Communications, Inc.
Falcon Cable TV
Jones Intercable/Jones Communications
Marcus Cable
Paragon Cable
Rifkin's Bedford Cablevision
Southwestern Cable TV
Suburban Cable 
Tele-Communications, Inc.
Time Warner Cable



II. Programmer Websites
A&E Television Networks
America's Health Network 
Animal Planet 
Black Entertainment Television
Bravo, the Film and Arts Network
The Cartoon Network 
C-SPAN
Court TV
CNN
Discovery Communications, Inc.
Disney Channel
ESPN
The Family Channel
Food Network 
Game Show Network
HBO 
The History Channel 
Ingenius
Knowledge TV
Lifetime Television for Women
The Learning Channel
MTV 
NBC Cable Networks
Nickelodeon
Odyssey
OVATION - The Arts Network
Public Broadcasting Service
The Sci-Fi Channel
Showtime Networks, Inc.
The Travel Channel
Turner Classic Movie Channel
Turner Learning
USA Network
UVTV/WGN
WAM! America's Kidz Network 
The Weather Channel