Caught this games blog just now. Raises some -admittedly sleepy - questions about why some successful games use a father-daughter relationship to 'activate' engagement with the characters, and why they seem to work better than romantic ones. Also if there is a dynamic caused by more gamers being female than ever.
Personally I think they work in the abstract Bioshock sense (as she says), but Fallout 3's dad was one of the least compelling ones I ever encountered. I hated that guy for being a weird freak, and trying to run my life.
Which now I think about it is quite realistic.