Star stares. For as long as it takes. If she wants to play she'll bring a toy over and give it to me- she loves to fetch. Sometimes she woo-woos.
Sherman will come over and paw you. When we first got him, he did it really hard and it HURT! I've been trying to get him to shake instead, and he's gentler about it now. He'll also stand up on his hind legs right in front of me (really cute!) He does that husky talky-whiney thing, too.