My most  patriotic moment ever occured when I watched the 911 memorial service shortly after the event.
Does anybody remember it?  All of the living presidents attended (that could).  I was watching it at work in a large room full of people.
When the Air Force Academy Choir struck up "The Battle Hymn of the Republic" - everybody started to cry.
I would love to buy a DVD of that church service. I've looked and looked and I can't find it anywhere.