Most of can attest to being hooked on something. Guys usually admit to it being video-games, or music, if they're really into sport, it could be something to do with that. One strange collection I've heard of guys having is beer mats. You know, those little cardboard coasters from pubs?! Bizarre, to say the least!
Girls, on the other hand, are a completely different story. If like myself, you like a nice manicure, then you will have heaps of nail polishes. Or you might well be like my mum and have a shoe collection that would fill a whole room.
I can personally admit to having a few obsessions.