I'm primarily a 28mm war gamer, so please bear with me, as I make a counter argument. I never use terrain tables as shown in the wonderful work from the link above.
I'm interested in many different eras and have many different armies. I'll simply use an appropriate looking mat for sandy or grassy fields and simply add forests, roads, hills and dwellings on top of the mat. That may require a little more suspension of disbelief than a dedicated terrain table, but it has some advantages.
The biggest disadvantage to 28mm Wargaming is storage of terrain elements. Therefore, most of my houses, roads and others have to do multiple duties, say from the ECW all the way to WW2. Plus, a static terrain table will always have the same features, in exactly the same places. That's fine for a beautiful "one off" game at a convention but it is rather impractical for home. I have no place to put a terrain table like that one Redzed linked to, even if it is for 6mm.
I'm afraid practicality, versatility and storage considerations will always trump a beautiful dedicated terrain table for me. It's a compromise I can live with.