Along the lines of gay bars in the Phoenix area, Plazma is one of my favorites. The reasons for this include: low-key atmosphere, nice bartenders, (sometimes) free jello shots served in plastic toy syringes, stiff drinks, and memories of killer karaoke with Ryan M., Ben H., and Corinne W.!
Drinks are cheap, music isn't too terrible, and there isn't that snooty pretentiousness that some of the other bars and clubs have. Ironically, I don't think anyone in our karaoke group of 12 was gay,but it didn't matter. It was all good fun, and we didn't get "hated on" for being so "hetero," which has happened to friends of mine at other gay bars in Phoenix.