Heavily accented man called "from Microsoft. Your computer is infected. I am calling you to fix it." And then trying to get me to run programs from the command prompt (it was very hard for me to keep from laughing hysterically) and finally out of frustration he called me a liar when he said he had my "unique computer ID" and I should trust him.
"Sir, you just called me a liar. Somehow I don't think that's Microsoft policy." But he did give me this phone number and his name, "Jack Wilson."