I don't know what it was about the 60's TV animation, but my earliest memories were that TV cartoons were just cooler back then. I don't know if it was the residual sugar rush of the glazed donut from the Helms Bakery home delivery truck that motored down my street daily back then, or what. You'd just hear that truck whistle promptly at 4pm, just in time for the Gigantor cartoon on channel 11, and bam, coolness.
Or maybe it was just the catchy theme songs, like Cool Mc Cool
Then there was Batfink, which any 6 year old at the time knew was hep. Of course, we'd discuss all this at recess.
And even your parents knew Top Cat was cool, since it ran in prime time.
Now the 60's Spiderman was all about the theme song. Ralph Bakshi directed a bunch of these.
And much later in the 80's, The Thundercats took opening title sequences to an extreme, as their opening was 500 percent better than the overall show.
Do you miss coolness in toons?