Just Jake's is Montclair's only place to get a good cold beer, and enjoy live entertainment Thursday thru Saturday. The bar staff are extremely friendly, and the beer selection is good.
They do have a non-smoking room in the back where they serve a full dinner, or you can eat at the bar. Food ranges from average to very good.
The crowd tends to be in the 21-28 range- you'll find lots of people from Montclair State University, and plenty of teachers from the schools nearby out for an after-work drink (or two).