Names! Some of them are pretty good in a spec fiction setting. The spammers must use name generators to make something that looks reasonable but isn't a real person... to dupe you into opening the email of course. But I just copy the name and delete the spam. Haha.
On a funny note
My email provider added new spam detection software, and needless to say, it rarely works. It's correctly identified two pieces of spam out of about 30. I sent a message to myself the other day, and it came back as SPAM. I guess I was sending junk email to myself. I'll have to cut down on that.
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Life is a lot like caving: Most of the time you grope around in the dark.