I'm up in Knoxville (about 1.5 hours north of Chattanooga) and while our startup scene isn't as web focused or developed (the Co.lab is awesome). We do have some fairly major businesses, Scripps Networks, Regal Cinemas, Pilot Flying J, Bush's Baked Beans, PetSafe, Alcoa, SeaRay boats, MasterCraft boats and Ruby Tuesday top the list and really smart people at The University of Tennessee and Oak Ridge National Lab - one of six national labs. If you ever want to visit, I'd be glad to play tour guide of my adopted city.