Guiseppe, the KJ at MJ's puts on a great show and draws an awesome crowd. If you like karaoke (or are curious about) this is a great time. They run drink specials all night from $2.50 drafts to $5 Long Island Iced Teas. There are different specials every week.
They do serve food as well and there is no door charge. All you have to do is show up, drink as much or as little as you like and just have a good time.