Probably my favorite brewery in Charlotte in terms of the taproom and outdoor space, and it's amazing they have only been open for a year. The atmosphere is just tremendous. Sit outside with friends and a pitcher or two and listen to one of the many local bands that pass through.
I really enjoy the Peak Farm Double Pale Ale. Lots of people like the Southern Girl Blonde, too. Sycamore does a decent amount of small batch beer, so chances are you'll find something unique on the chalkboard when you visit.
The only reason this doesn't get five stars is that it can get VERY crowded at peak times and on beautiful days, which means you can wait 10 minutes to get a beer. Sycamore is getting ready to expand, so that won't be a problem for long. Even still, it's worth the wait!