Sony had an LCD TV a while back that had a computer motherboard, hard drive, DVD drive, NIC, essentially a whole computer in it, that I think was an attempt to make a home media center, it had a hyper-threading 3.0 GHZ P-4 processor and something like a few gig of ram.
I've only seen two of them in a load of junk TV's I picked up and in both of them the computer motherboard was cooked really bad around where the power supply connected. Don't know what the model # was and haven't ever seen a working/fixable one, so I don't really know for sure. Remember I popped the processor out of one and used it to upgrade an old Dell that I had at the time.