The best out of the old ITV logos/jingles were, without a doubt, Thames Television, London Weekend and Yorkshire Television.
I associate one with 'Rainbow' with Geoffrey Hayes, one with 'Play your Cards Right' oh yes and 321 is about to come on!!
On a more negative note, I used to hate Sunday nights when the spinning Knight of Anglia Television would appear followed by Sale of the Century; - as I'd have dreaded school in the morning!