Growing up I had a "mix tape" of TV Theme Songs that I had recorded from the TV. I now have TV Theme Songs CD in my iTunes. (yes, I'm a nerd)
Facts of Life
The Adams Family
Differn't Strokes
The Flintstones
Happy Days
Not sure they are the top 5. But they are 5 good ones.

Too lazy tonight to come up with 5 but I always loved this one:
Instrumental Theme Song:
Honorable mention: Hill Street Blues
5. TIE: Seinfeld / Curb Your Enthusiasm
4. Barney Miller
3. Hawaii 5-0
2. Sanford & Son
1. MASH
ahh, how did I leave out Mash, WKRP Hahaii 5-0

There’s so many good theme songs.
I just realized I left out the iconic Andy Griffith Show. Everyone knows that whistle!![]()