A staple dive that stands out even in Boulder's crowded bar scene, Conor O'Neill's is the most authentic Irish pub you'll find in the Rockies, thanks to the importation of everything from the bar to the fireplace to the decor. Irish masons even flew over to help build the place. Live music on weekends includes rock, surf, folk and, of course, Celtic. Conor O'Neill's boasts dark rooms lined with eclectic artifacts, placed haphazardly above dark tables and booths. The spot is always a little sticky, thanks to the debauchery that's long taken place within its halls. Although the pub's big draws are its tap beer and live music (the center room hosts open-mike nights and local musicians), many regulars stop in to grab burgers here, too. And it's not unusual to witness groups doing car bombs, even if St. Patrick's Day is a long way off.