Jimmy Eat World, the dude could not sing at all it was terrible.
That's the first I've heard that Jimmy Eat World have been horrible...
Everytime I have seen them they have been fantastic, the last time was a 29 song setlist from the Futures Anniversary tour and everything was thrown into the performance that night, it probably will sit in the Top 10 of best shows I've seen.
-----
My pick was The Dandy Warhols, they played a +2hr setlist in a small club, no energy at all, they all took a smoke break at various points, many patrons were looking at their watches that night hoping they would just end it asap...
Another for another reason was The Killers, when they first released their first album, they came out and played the album, sans one song that was replaced with a B-side and left... At the time, whilst I wasn't expecting a overly long show, but artists with only one album tend to mix it up abit, so it was a sour taste for a short and expensive show.