D'oh. I didn't even notice that you posted the IMDB link in there.
I thought that you had forgotten it, and that's why the link looked so messed up.
I'm glad, though, that my "shot-in-the-dark" guess actually proved to be quite accurate.
Here is the first one I found on youtube: (and as I watch it, I distinctly remember it now, just because of the twin cats' annoying but recognizable laugh)