4. The Blue Moon
Of course the U District has its fair share of dives, but the most quintessentially Seattle of them is the Blue Moon, which has insanely cheap drinks and insanely grimy regulars "enjoying" the bottom of the barrel in live local music. Don't wear nice shoes, there are peanut shells an inch deep on the floor.
712 NE 45th St, University District (206-675-9116)