Sadly, there really isn't a strong female superhero whom I can admire (other than Buffy).
I'm pretty much a newbie when it comes to superheroes, having only recently seen (and thoroughly enjoyed) the most recent incarnations.
Currently, Avengers Assemble is definitely my favourite of the franchise (closely followed by Thor and Iron Man), and I'll admit to having been deeply impressed with Scarlett Johansson's The Black Widow.
Also Hawkeye.
LabRat :-)