Columbo was a long-running detective TV series in which the wonderful character actor Peter Falk played a disheveled schlemiel of a police lieutenant who put (usually) wealthy and arrogant malefactors behind bars, after passive-aggressively nudzhing them for 45 minutes. It may also be the most 70's-looking show ever.
So if you're looking for visual cues between 1970 and 1980...
|Dig that high tech office!|
|Murder, 70s style|
|What Shatners looked like in 1973|