TV Theme songs...
I found this site: 'TV Music and Song', and instantly went to one of my favourite theme songs from childhood, It's About Time - a theme I haven't heard since, well, 1966. I'd no idea when it was on television - I had to look up the year. I don't even remember the show itself, but I could still sing part of the theme song. For me, that's rare. Didn't know there were different versions.
My other favourite was the theme from "M*A*S*H", mostly because I liked the words, which aren't sung with the TV show theme.
Too bad we can't listen to the theme for The Professionals.
The theme to Perry Mason was also dear to my hear; memories of watching it on Friday nights, curled up on the sofa with my mother. It was really my first TV show.
Current favourite: Inspector Morse.