Music:
First you have Rusted Root which is a yuppie version of an actual band.
Then you have Jack Johnson.
Then you have Dave Matthews who is really at the fringe of being called music.
Then you have people like Warren Haynes who are actually really good.
Jack Johnson is on the bottom of the talent heap. Better than rusted Root, sure. His fans are typically prepubescent girls and college age people who believe the VH1 and MTV definition of music.
Seriously, look in my signature and grab Warren Haynes live from Feb 20, 2009 which I am listening to now. Now that is song writing and talent all rolled up into one. Might be at archive.org. etree would be luck if it is still available.