You could tour Sweetwater or Atlanta Brewing Co. and sample their brews.
I liked Max Lager's when they had a restaurant in Gwinnett, but I think it burned or something like that and it's not there anymore. They still have the downtown place to my knowledge. I've heard good things about 5 Seasons in Alpharetta too.
As far as bars go to, I usually go for the music. I really like the 10 High/Darkhorse Tavern, Smith's Olde Bar and The Earl. There are two Irish pubs I've been to, Fado and Limerick Junction, but they weren't really my speed; nice places though.
How could I forget Taco Mac??? It's definitely a chain, but their beer selection is phenomenal for a chain restaurant. I am a big fan of their Passport club.