When I'm 22 I'm going to be learning Jeet Kune Do, Wing Chun & Nunchaku. Preferably not all at the same time though. I'll probably end up doing one for about 10 years & then the next. Reason I'm waiting 'til I'm 22 is because my body will be fully grown then.
Although I do teach myself Nunchaku now, & I know it's dangerous & you're not really meant to, I've got by quite good without having any bruises on my ribs. I haven't used them for ages though..