Conversation so far:
Where was it released?
A Canadian show, This Hour Has Seven Days, aired from 1964 to 1966 on CBC.
How many episodes were there?
CANNOTANSWER.
What kind of show was it?
the Canadian show mixed satirical aspects with more serious journalism.
Did it air anywhere else?
An Australian show, The Mavis Bramston Show, aired from 1964 to 1968 on the Seven Network.

Question: Was it popular internationally?
Self-contained rewrite: Was "The Mavis Bramston Show" popular internationally?