I was volunteering at the shul today, when the mother of the young brother and sister who helped out during Havdalah (Erin) came up to me and said, "I want to thank you."
Me: "For what? I should be thanking you for coming to the bar mitzvah and for letting your kids take part in Havdalah."
Erin: "For having the most beautiful bar mitzvah service I've ever been to."
I just became speechless, and then gave her a hug...