The '70s was an absolutely atrocious decade for fashion, as I'm still scarred by some of the clothes I wore as a kid, but it may have been one of the best decades ever for music particularly tv theme songs. I can't argue with Hawaii 50 being the GOAT, and it was also one of my favorite shows, but others for which some may argue include:
Mission Impossible
Original SWAT tv series
Baretta theme song (one of my other personal favorites - Sammy Davis Jr. classic)
Theme from original "Shaft" tv series (another personal favorite)
Police Squad
Miami Vice (of course)
Streets of San Francisco
Baa Baa Black Sheep
Magnificent Seven
Mod Squad
Magnum PI
Six Million Dollar Man
Tier 2
A-team
Wild Wild West
CHiPs
Kojak
Barnaby Jones
And of course made famous by the Blues Brothers (Rawhide them song)