I was at a car club meet a few months back and 2 guys in a SUV drove up giving some story about how they are home electronic installers and they got a 40" plasma TV from their supplier extra. They said they were just wanting to "give" it to someone since the house they were working on didnt have room for it. My BS meter went off immediately and im sure they got the impression that we werent interested.
That's an old scam. Back in the day, it was empty stereo speaker boxes (filled with dirt or trash for weight). The pitch varies, usually "my boss loaded the van with 20, but the paperwork only says 15. If I take them back to the store he'll just keep them. So I need to sell the extras fast for cash." Sells them out of a van for cash, drive off. The buyer lugs them inside, opens them, and is screwed. You can't call the police I say "I thought I was buying stolen speakers and all I got was dirt."
I imagine plasma TV boxes is the updated version. Maybe, just maybe, it is a legitimately stolen TV. But probably is an empty box and the TV is back home.