The walk to it will feel like you're about to get robbed (and you might), but Coneheads is some of the tastiest food I've ever had. I just stumbled across it walking to DRKMTTR a few months ago and have considered making the drive back to Nashville just for some more of it. If you like chicken and waffles, you gotta check it out
E: The Opry Hills Mall is worth stopping by for the Rainforest Cafe, if you're into that kind of thing. There's not much going on around there otherwise
E: if you're looking for a good brewery, look at Yee-Haw, it's about as TN as you can get and was started in my hometown (I don't live there anymore). I've never been to their Nashville taproom but I'm sure it's a good time.