I've been here multiple times and I would show up weekly just for the entertaining people-watching but the display case filled with delicious French pastries certainly helps!
This place is usually busy and bustling so, if you're a first-timer, it's preferable if you come with an 'old pro' so you won't hold up the line trying to decide on what to order.
My personal favorites? The famed salted caramel brownie, chocolate and plain croissants, any of the fruit tarts, and the macarons. I've never tried any of the soups or the sandwiches but my friends have all raved about them. I would skip the house coffee - nothing special about it all.
Grab a seat in the atrium and enjoy the food/ambiance!