Disappointing:
-Freezepop at PAX, aside from the Final Countdown. TI mean the first time, 2007, not the 2008 set where they played the exact same set in the exact same order.
-The Saturday Knights, every time I have had to sit through their crap waiting for a better act to get on stage. I think the first time we booed them off, actually.
-Cat Power was so coked up that here one-woman power show was basically just her, half-conscious in a chair, playing an E flat on a guitar for 40 minutes. [I was only there because she was opening for Sleater-Kinney]
-Modest Mouse back in 2005 [pre-capitol records slavedriving] when the concert was ended at 10PM [outdoors on a frday night.].
-Bob Mould solo. I love Sugar and his solo work, but he didn't have the oomph to keep us interested for 90 minutes.
I have had a few of the reverse, though. Out to see a band, never heard of the opener, liked them enough live to get the CD, and was totally disappointed when I got home. Annuals, Zolof, and that 3-white-girl rap act whose name escapes me.