I have enjoyed watching the Antique RoadShow on PB for years now. There's something compelling about seeing people discover they have a rare treasure in their possession they had no idea was valuable. Sometimes its like winning a lottery and always fun to see.
It's also educational and I've learned so many things over the years about various valuable things, like Rookware and Connecticut high boys. I've learned never to clean any piece of furniture if its old and not to ever allow anyone to refinish something. And I've also learned the value is a relative thing. Sometimes the ugliest items are worth the most money and I would gladly part with them were I to come across them in an attic somewhere.
Recently I saw an "update" version of the RoadShow - an episode from 1997 which they repeated, but each value given was then updated at the bottom of the screen with the 2012 value. Many were worth more now - other worth far less.
I just find it interesting what people will pay a lot of money for.