Aries: people always running in the openingTaurus: the food maniac which every anime had at least one of
Gemini: the sudden yaoi scene
Cancer: the dead parent
Leo: the childhood flashback while being in an intense battle
Virgo: the tsundere
Libra: magical transformations
Scorpio: the perverted guy
Sagittarius: the beach episode
Capricorn: the glasses thing
Aquarius: FANSERVICE
Pisces: in the back of the classroom behind the window table