Jack's is the classic Pittsburgh dive bar. It's usually filled with regulars throughout the week, and has a decent crowd Friday & Saturday nights. Great place to go if you want cheap drinks and to shoot pool. They also serve cheap food; but their menu isn't that extensive. In fact, their kitchen is located directly behind the bar the only way they serve hot food is directly from a microwave or deep fryer.
The best part about this bar—it opens at 7 AM daily. The worst part—it's filled with smoke.