Number showed up on my caller ID, I answered it and no one was there.  I said "Hello?" 3 times and then hung up.

You have entered a drawing sometime in the last 18 months - you may have won a Lincoln Navigator or other prize.
I called back and was asked if I would be home in 15 minutes and they'd call back.  A nice lady called back with the promise of one of 4 prizes, the lowest being a 32" flat screen TV.  I answered a few questions.  I'd get a claim number and would need to attend a 90 minute presentation on vacations/vacation properties.  I declined.

Caller ID showed this number and "Chicago IL".  I checked for messages.  Apparently they did not hang up quickly enough, because voice mail did pick up.  All I got was dead air, though.

Just got a call from this person. My voice echoed on the other end, I stayed on the line until they hung up and only said hello once. What a freak.