Went to a plain white t's concert for like 20 bucks a few weeks ago. They were decent, but the opening bands really stole the show.
It was a concert that reeked of hipster, but I couldn't care less... it was a fun time.
The opening shows were:
Andrew Ripp
The Wind + The Wave

The wind/the wave gave out free albums, and its actually a fantastic album. Andrew Ripp also put on a great show, and he had a fantastic sense of humor.
It definitely wasnt the best show I've been too, but it definitely WAS the most consistently solid show I've ever been to.
I tend to go to shows where the opening bands either SUCK or are extremely forgettable so this was a nice change of pace.