23skidoo: I just started watching the series again a couple days ago and they started saying it in the show in the first episode. I'm on episode 8 and they've already said it 9 times.
I'm watching, "I Spy" again (the 2nd time since I bought it last year). I'm on the 8th episode and, already, they've said, "Wonderfulness" in the show 9 times. If I recall correctly, they say it a number more times at least in the first season.
Labels and cover images included in the videos. If you want, copy and post them here from there.
First image is the front cover.
Third image is the back cover.
Sixth image is that A-side label.
Eighth image is the B-side label.
The right half of the videos is not part of the record's package.