First, this would go back to how you personally define a "dive" bar, but these are some of the places I like to hang out.

Most anything around Wrigley is going to be overrun with Trixies (think Marina district sorority girls only with less variety and more bottle blond absolute clones). But I do like the L&L Tavern (featured in the DBC photo album) which is on Clark and Belmont, just south of the park. On the weekends it is something of a hipster place but on weeknights it’s cool. Townhall Pub on Halsted is a dumpy little place, but I like it there too.

Otherwise, if you are willing to wander around town a bit, the Wicker Park/Bucktown areas can deliver. Beachwood Inn, Zakopane, Pontiac Café, Gold Star and Club Foot are some of my favorites though the music at Foot can get a little bit loud.

www.centerstage.net lists bars by neighborhood and by classification (including dive, though I’m not so clear on their definition of a dive). Luckily, in Chicago you can trip on the sidewalk and land in a bar.

Brazen speaks the truth...wrigleyville is thin on dive bars. I can recommend "Korean Bar" a block or two south of wrigley just off Clark.

Whilst at the art institute walk a couple blocks north to Washington. It's kind of a restaurant, but breaks down into a dive bar circa 4pm. South side of the street, just west of Michigan ave.

Rock on Libra! Mine is the 8th.

I don't know if anything coming up is "interesting" (tonights show is because none of us even know who is playing but for unknown reasons security is super tight) but on non concert nights we always have Brew & View, which may be the finest variation of a dive bar in all the land, full bar and second run movies in what was once a grand old theatre but is now held together with duct tape.

Man, I love that place.