As for Gibbs, I don't watch NCIS anymore, but I remember that about the time that I stopped watching, there were a couple of episodes in which Gibbs was preaching about all religions pray to the same god and muzzies were the same as anybody else, etc.
That could be part of the reason I don't watch anymore although I think it's more to do with no Zivz.
I missed the “all religions” remarks episode and that would have done it for me. And Ziva was what made it worth watching. The re-runs, that is.