well michael that is how i took it too...that he does things different at home than he does when he is working. that is why i didn't pick the obvious things that are shown in the episodes...i figured he had his preferences at home that wouldn't be the same as when he was working on a case.
mac....hi.....when does he eat a peanut butter and raisin sandwich?? ........and i think he may be a ny giant football fan....since he supposedly hailed from ny...and i don't think columbo would have been a ny jets fan!
Football team: he took a keen interest in the radio broadcast in Most Crucial Game. I don't know who the teams were, but if one was a NY team, he might be rooting for them.
The question does bring up an issue I'd never considered. Columbo mentions he can never solve the murders in murder mysteries, so they're not his favorite genre (of course he could have been saying that to throw off the murderer). Does he ever give any clues as to what he enjoys reading? His wife--I think--likes mysteries (again, if he wasn't just throwing off the killer).