Denver
I go to Denver pretty much every year for the Great American Beer Festival, so over the last 20 or so years I have found a few good (bad) places to hang out or hide. Here (again in no particular order) is my list.
The Falling Rock - 1919 Blake St. The best beer bar in Denver (and the entire Region). It has an unparalleled selection of draft and bottled beers, great bartenders (and owners), and the food is pretty good too. Pool tables (and quiet corners) downstairs. http://www.fallingrocktaphouse.com/
PS Lounge - 3416 E Colfax Ave. A comfortable "dive" with atmosphere and good bartenders.
Mozart's - 1417 Krameria. Good local dive. Friendly customers and nice staff and a cheap, cheap beer. Great neon out front.
El Chapultapec - 1962 Market St. Good dive bar during the week & day time, good live Jazz music on the weekends (but a very differnt crowd). A true Denver classic.
Lion's Lair - 2022 E Colfax Ave. Rockabilly/hotRod/biker bar, lots of tattoos, leather and Betty Page Grls. Good music sometimes, feisty bartenders and ok beer selection.
Sobo 151 - 151 S. Broadway. Czech owned/themed sports bar with the best/freshest imported beer selection in town and a few good local beer choices too. A nice place with a good atmosphere (and a few pool tables in back) - food looks good too. http://www.sobo151.net/
Satire Lounge - 1920 E Colfax Avenue. Good neighborhood bar, okay Mexican food, good crowd. (great Neon out front) http://www.petesrestaurants.com/satireLounge.html
Brown Barrel - 76 S Broadway. Beer dive. Friendly bartender, good crowd.
Bar Bar - Just off Broadway (near the Denver Hitting Club). This bar stand alone (both literally and Figuratively) as a beacon for those in need. Enter here and step back in time (or loose it completely). This bar has no name or discernable address, only a neon sign above the entrance announcing "BAR" - thus comes the moniker Bar Bar. Festooned with "stuff' donated over the years, and picture from years past. These kinds of bars are a fading kind. A great dive, pool table in back, good bartenders, interesting clientele, a good juke box and a MEAN bloody Mary. Bar Bar is my pick for the best dive (that's still open) in Denver.
My Brother's Bar - 2376 15th St. Out of the way (yet close to town). This is a great old school neighborhood bar with a relaxed comfortable feel, good food, a decent beer selection and a fine mixed drink. Lots of nooks and places to sit and hide from your worries
Wazee Supper Club - 1600 15th St. Not a dive but just comfortable. Good Pizza, nice beer selection, decent service. www.wazeesupperclub.com/
Squire Lounge - 1800 E. Colfax. neighborhood dive with cheap drinks. Sobriety not tolerated - shut up @#%*er and start drinkin ! - http://www.thesquirelounge.net/
Star Bar - 2137 Larimer St. Just a friendly dive with several nearby Mexican joints that have great food. Stop in for a beer before/after eating.