Haha - that subject line may be true in real life (people say i'm goofy).
In Make Me A Perfect Murder, when columbo is at McAndrews' house, he finds a piece of broken glass out on the patio. Not possible!!! Mark McAndrews broke the glass in the bathroom, upstairs with Kay standing right next to him. Go figure that one out!!!!
He put the keys into the glass in the bathroom, but then went out to the patio and then there was the confrontation with Kay, and then broke the glass to reveal the keys to show Kay.