Ah, Jack. Violent, impossible to be friendly with if Paragon and a strong hatred of Cerberus. Heh, pretty much like an opposite to Tali apart from the cerberus problem. Well, then there's the fact Tali swears almost as much as Jack. (Bosh'Tet this and Bosh'tet that.) I think Tali is more useful cause she carries a bad ass shotgun.