Consistently dark, smoky, loud, and fabulous. Yes, scenesters abound, and yes, they're pretentious rock snobs, but if you can handle the attitude you might learn something or at least hear a story about Jeff Buckley receiving a truckload of produce at a show at Cup a Joe.
The bartenders are great. They remember their regulars and good tips, and take care of you in return. They won't kiss your butt, and have nothing to prove, so don't expect it. There's a good selection of cheap beer (PBR pitcher six bucks) and quality beer (Chimay, Dogfishead, etc.)
The DJs are reeeeeally good and love requests, but you've gotta like your music loud and sometimes obscure. No TVs or advertisements anywhere, which is refreshing.
Weeknights-quiet and cozy, with friends and good music. Weekends-packed and loud, with friends and good music. I love this bar.
Pros: Good music, Cheap/quality beer, NO ADS!!
Cons: get over it but, loud, dark & smoky, crowded weekends