Lol, seriously?
When I heard about Fi, I thought I'd hate her. But the moment she appeared I mostly laughed my *** off. As much as the hearts comments are annoying, the fact she stated the obvious the way she stated only added to her personality. I mean, it fits her character(not like Navi you think like, "You don't say?" annoying Fairy...). I cracked up when she was like: "Master there's a 5% chance this thing is Zelda". Man that was just plain awesome.
Not to mention during the scrapper quest, that he refused to help Link, she appeared and said there was no way for them to get the item. Then the robot falls for her, goes all gaga and makes all kind of love speech to her and all she does is "..." and turns to Link, "master, we have a way now" LOL.
"If i'ts droppings hit you, I estimate your aggravation will increase by 100%." <--- Epic
"Fi: There is a 90% chance the Sacred Flame is within this volcano. I suggest you search for flames."
Oh I wish I found somewhere all of her quotes
I like the character a lot. It was very well thought of. Of course nothing beats Midna. Midna was just pure awesomeness.