The Brick Store Pub [http://www.brickstorepub.com/] is on E. Court Square just east of the old DeKalb County Courthouse.
It's claim to fame is a very large selection of bottled and draught beers, including an upstairs high-gravity Belgian Beer bar. No other place anywhere near here has such a wide selection. And, the beers are served in brewery specific glasses.
It's also packed virtually every night (except early in the week) with those who know the food is good there.