I'll be busy tonight, so I thought it'd be best if I update and answer posted comments now.
I asked my wife about Sammy, and she told me that I've known him for some time, and she met him herself at a Christmas party a couple of years back. I had to be cautious in how I asked her questions so we wouldn't argue again over her worrying, and it seems Sammy is a physical therapist who calls to chat often. I do not remember any of these conversations. Oh well.
I tried to call him back today (simply because I felt it the cordial thing to do - I have no idea how I would actually speak with someone who considers themself a close friend but one I can't remember) but no dice.
Moving on to another subject...
My colleague in Toronto (who will go by Greg) called me today and told me that he had taken some time off not long ago and was already down in the States. He should be in California by Friday or Saturday. When he gets here, we'll get together and he'll discuss things he think will be of particular interest to myself and followers of this journal.