Sisters in Arms: Prison Break, Supernatural, Numb3rs, and Firefly

So, three of the returning shows that I'm watching this year feature pairs of brothers working together (Numb3rs, Prison Break, and Supernatural). A large part of why I'm watching the shows are because they're about strong, interesting sibling relationships.

Which brings me to a point -- where are the women? Where are the really good brother-sister or sister-sister shows? Joss Whedon should not be the only person in television capable of creating an interesting brother-sister relationship that drives the narrative forward (if you do know of any shows with strong, interesting b-s or s-s relationships, I would be thrilled to know about them).

The interesting thing (to me) is how Simon-River actually follows the 'format' of all three cited brother-brother dramatic relationships -- the younger sibling is the smarter of the two, the older starts out as/tries to be the physical protector of the two. The most straight-up example of this dynamic is Numb3rs, where Charlie and Don are pretty much set in their roles -- I doubt that we'll ever see Charlie shoot a bad guy to save Don, instead, he always uses his brain to help save his big brother (I admit to the possibility of being wrong). Supernatural also tends more toward this side of the scale -- Sam is the victim more often than not, the researcher more often than not, the one who went to college (each of the younger siblings is spot-lit in their series for 'having gone away to an important school' -- Charlie to Princeton at thirteen, Sam to Stanford, River to the Academy at a young age, Michael to Princeton).

Prison Break and Firefly each take a slightly different approach. While it's implied in Prison Break that Lincoln took care of the younger Michael, in the series itself, Michael is the rescuer of his older brother (who does still try to protect Michael, though Michael has, so far, always had it enough under control not to need Lincoln's help). In Firefly, we start out with an older brother-protector/younger sibling-protected dynamic but, by the end of the series (and into the movie), the roles have pretty much equalized, with River being the more proactive fighter.
( Spoilers for all four shows )