I'd most want to talk to my Dad, who died a year and a half ago.
Recently, I was with my brother, and he told me that he was at Mom's place a few weeks back, and he was sitting outside alone. Mom was out for a while, so no one else was at the house. He said that he suddenly heard the sound of Dad's wheelchair in the sunroom just above him, and when he went back inside, he had the most wonderful feeling that he was not alone.
My brother is even more pragmatic-minded than I am, and he said what he heard was plain as day, no mistaking it. Whatever, it was an absolutely moving experience for him. Perhaps he really did have a moment of contact with my dad. If so, then I consider him blessed.