"Match Game" seemed to dislike virtually any other game show that used celebrity panels. Gene would periodically refer to "The Hollywood Squares" as "that other show," although I always took this to be a friendly rivalry. He REALLY didn't seem to like "Celebrity Sweepstakes" and when Celebrity _______ was the SuperMatch question, he became incredibly snide about it, even though it ended up matching for the $5,000.
And of course, we can't forget Bob Barker calling The Gong Show "Hell on Earth" when asked about it in an interview.