A show on PBS, they look at old stuff like paintings, pottery and collectables people found or inherited, and have appraisers explain the backstory of the item and estimate how much it could be worth at auction. It's great.

Edit - I think BBC has a version too

It's a TV show on PBS. People bring antiques to be appraised, and an expert tells them what they have, what's special about it, and how much it could be worth. The fun ones have someone coming in like "this was my grandmother's cabinet growing up and I haven't thought twice about it" and then the appraiser telling them "this was made by the most famous carpenter in 1890's Massachusetts, it's worth $20,000" or similar stories.