SLR iPhone?

This seems like a pretty dumb idea to me. Photojojo has released an adaptor enabling you to attach an SLR lens to an iPhone. Apparently it provides greater depth of field, etc. Everything that a real SLR camera can do! My only problem is that if you're going to carry around a massive lens like that, why not just take your real camera with you?

Fujifilm X100... I want this.

Learn more about it here.