I was introduced to Columbo by a housemate a few years ago and was instantly hooked. The episode you mentioned is excellent, as are all the Jack Cassidy ones.
For me the standout episode is 'Any Old Port in a Storm' (1973) with Donald Pleasance.
For me the standout episode is 'Any Old Port in a Storm' (1973) with Donald Pleasance.
1) Peter Falk 2) Creative murder ideas 3) Great plot 4) Supporting performances
In "Any Old Port in a Storm" the acting by both Falk and Pleasence is outstanding. Regarding 2), I always adored "Now You See Him" (the magician episode, also with Cassidy) and "Swan Song" (the airplane murder with Johnny Cash).
The writers were also very good on making sure motive, means and opportunity were clearly picked apart in all ways. Apparently the whole crew was in on it and would make sure that the story stayed true. Making sure things were filmed so they did not contradict later or past actions.
The 90s series was a bit less tight and more of the 'stick it to the rich'. They were enjoyable enough. But something was missing.
Other is adding atmospheric elements that serve no purpose to the plot, just paint scenes of life. In modern films, most things shown will have to compulsively have some utility later.
The show oozes genuine charisma, and the slow 1970's pacing is an absolute joy.