Ravenclaw is the least well-known of the Hogwarts houses. We know it is the house of the intellectual. It is respected. (Who doesn't admire intelligence?) But it is largely ignored. Maybe, like it's element, Air, Ravenclaw is just too intangeable to grasp. The astrological signs of Air are Gemini, Libra and Aquarius. Students we know of so far are Cho Chang, Harry's on-again—off-again love interest, Penelope Clearwater, Percy's girlfriend, Padma Patel, Parvati's sister, and Luna Lovegood, the most interesting Ravenclaw so far. She is spacy and eccentric and reads her father's newspaper upside down. She is perhaps a seer. She can see Thestrals (well, Harry can see them too now). She is a true Ravenclaw, a very airy person who's mental preoccupations shield her from the pain she would probably feel if she understood how crazy she is considered to be by her peers.