I watch far more YouTube these days than I do actual television. A series I just started is How to Build a House from the Essential Craftsman channel. In this series (that is still being released, as of this writing), they walk through the entire process of the house building process. From doing due diligence on the lot itself, to getting the building permit; from preparing the concrete forms to actually selecting the type of concrete (who knew there were different types?). I'm only about 15 or so episodes in, but it's been really eye opening in terms of the amount of work that actually goes into building a house.
Each episode teaches you something new, which has been a lot of fun. I recommend this series if you're a fan of This Old House or if you have an interest in how things are made. Here's the first video: