Dunn-gaherin's Pub Newton. . .
The beer's fine.
Seriously, I love the atmosphere and the friendly service. The food I tried appeared to be straight from bags in the freezer, and either microwaved, deep fried, or tossed on a griddle. Sometimes not for long enough (one entree was still cold inside). I think it's probably ok if you stick with burgers and the like.
In that general area, I think O'Hara's has better food quality, even though I'm not a big fan. At least they manage to heat the food up before serving it. The Biltmore (pre-turnover) was head and shoulders above either, but it was aiming for a slightly different audience. I haven't gone since the chef left.
I've been to Dunn's a handful of times since by brother lives down the street and is obsessed with it. The food is decent but nothing that imaginative. I can see why my brother likes it though. Its got a nice relaxed atmosphere, yummy steak tips, a burger that is never overcooked and its not too expensive for a weeknight meal. Plus, as I said, he can walk there. Doesn't everybody like having a neighborhood place?
That said, I wouldn't go out of my way to go Dunn's. But if you live nearby you could become a regular.