You're probably that interesting and you stand out in a crowd.
It could be your fashion sense, your hair style, hair color, your demeanor, your accent. Its easy to shock or get people's attention here. Generally pinoys are not fashion risk takers, they don't like to be poked fun at by their fellow pinoys. Pinoys like to give the head-to-toe stare in general and try to assess you. But all of this happens like a reflex for some people, it can simply mean they are just curious or fascinated or appalled by you =)
FYI, this question was from an expat or balikbayan who is still unnerved by the local case of the "stares" :D