I once met Natalie Portman at a cafe in Bondi when she was filming one of the Star Wars films. It was a group table and I noticed this very small Jewish girl who looked familiar. But I just thought she was someone I knew from around the Sydney Jewish community.
It was only when my male friend (we were there with our wives) pointed out it was Natalie Portman that we made conversation.
While she is a great actress with a strong screen presence, she is quite unassuming in person.