I just watched "A bird in the hand" and Tyne Daly's character Dolores was really interesting. Her exit at the end is one of the funniest bits in the whole series.

And earlier in the show, the scene where she refuses to give Greg Evigan the money is really excellent. Her character suddenly became a lot deeper than she appeared at first. I remember being surprised the first time I saw it.

Mrs. Columbo

Kim Cattrall in "How to Dial a Murder" ... At least, she was the hottie I wanted to spend some real time with.

From the perspective of me being a hornball, the #1 choice is Gretchen Corbett, in the bikini, in "Exercise in Fatality".

The most interesting killer is Ruth Gordon in "Try and Catch me".