Meeting a strangers Mii with StreetPass

I have been toting my 3DS around with me everywhere I go, just for the opportunity to meet someone else’s Mii via StreetPass. Yesterday it finally happened at, of all places, the grocery store. After finally experiencing this, I have to see it’s a really neat feature! Plus his Mii helped kill a ghost on my quest to free my king. Have you had an unexpected StreetPass encounter yet?