The place I go most often is probably
Another bar I frequent is Nate and Wally's Fish Bowl. There isn't too much that makes it a great place, but it's usually a good spot to get a drink rather than wade through crowds and wait in lines. Other than that, the best part is probably the namesake, a drink called a Fish Bowl. It's usually available in two flavors, and is served in a plastic fish bowl.
These are the bars I usually go to, but head downtown and check them out for yourself. Each has characteristics that makes it different from the others. Need some help? Check out Raising the Bar in BG. It's a blog that won't be updated, but it contains articles written by myself and other journalism students that classify the downtown bars. Cheers!