What was nicest (most random) compliment that you've ever been given?

I’m talking about your personality/character here, not about the physical.

I was in a coffee shop with some friends and a young-ish, hippie family came up to me (after having finished their lunch) and the father said, “You genuinely seem like a happy person.” and then he smiled. I then thanked him, and they walked out… Random, but, nice. :)