I often have moments like that too,
the same type of things like thinking of someone then they will call and songs on the radio.
I knew my sister was pregnant as soon as she walked in the room one day. She hadn't said a word but then said "I Have something to tell you" I said "Let me guess, you're pregnant?" And I was right.
Also I was waiting on the bus the other day, I had been waiting 20 minutes, was coming home after staying at a friends the night before. I was really tired so shut my eyes.
Out of nowhere the image of the bus coming with a blue car infront of it came to my head. Two minutes later along came the bus with the same style, blue coloured car infront of it.
I think everyone has the potential to be a little bit psychic. It just depends on your state of mind. These "moments" only ever come to me when I'm relaxed and happy and don't have much in my head, but when I'm stressed or worried they never happen.
Just having an open mind can make you more tuned in to things.