Charleston, SC show in April 2003
I was trying to look up some info about this show I went to in the spring of 2003. There isn't anything on Setlist.fm, but I've found a few things that lead me to think it was here.
https://www.billboard.com/music/music-news/third-eye-blind-links-with-ebay-for-spring-tour-71832/
https://charlestoncitypaper.com/2006/05/17/feature-the-plex/
So I suspect it was April 19th at "Plex", also possibly called the House of Blues, in North Charleston.
It was a crazy fun show for us at the time. Tony held his guitar out over the crowd while playing and I strummed the strings. Got some picks. After the show we met the band, Stephan signed my shirt, Vanessa Carlton was with them on the bus and she came outside and said hi to us all. I asked Stephan what his favorite song was, he said probably Wounded. I then told him that he should release a studio version of Scattered, which incredulously they did many years later.
I have some photos that someone behind us took as well I believe if anyone is curious to see those.