CBC

Set to 5 different clues across 7 published puzzles, most often “Toronto media inits.” — The New York Times, Sunday, 4 December 2005.

3 letters

Every clue on record, most used first

Toronto media inits.3 times
The New York Times — Sunday, 4 December 2005
Toronto-based TV networkonce
The New York Times — Monday, 21 February 2011
Where Alex Trebek worked as a newscasteronce
The New York Times — Saturday, 22 August 2009
It's watched in Ont.once
The New York Times — Sunday, 1 August 2004
Respected media inits.once
The New York Times — Sunday, 31 December 2000