I went to the O.A.R. concert today.  They are so incredibly awesome!  I really love that band.  The music is awesome, the concert was so much fun, the opening act (Matt Nathanson) was so so cool too.  "How about a revolution?  He said why.  I say look.  Ya'll say ahhh.  A revolution- you all say Jah."  - OAR. 
They're such an upbeat, inspirational band.  That was one of the best concerts I've ever been to.  It was so much fun to dance in the crowd and most people sang along.  It was a pretty long concert too.  The two opening acts and they both got to play for about an hour.