I've never had an experience with picking up someone else's thoughts (that I know of) but I've had plenty of experiences thinking of random things and just having someone start talking about it out of the middle of no where.
The most recent were 2 days ago I was out and I was txting a friend about a TV show and a funny picture I saw online to go with it. I forgot to mention Wine and thought I should have but then decided not to send another text. Right after that a few girls started talking about wine out of no where when their conversation was just talking about their day right before that.
Then yesterday I was in the topic about video games and I was thinking of all my game consoles I have in a tub out in the garage, I mean we haven't touched the tub in years but soon after that my brother came downstairs and asked me if I knew where the tub was in the garage because he wanted to play the games.
I've also made friends believe me when we were having a conversation about something and they knew the topic completely but I just knew basics and thought up random BS facts about the topic, then I told them that I don't actually even know what we are talking about :p
I wish we knew more about harnessing the power of our minds.