Fansite Kara Zor-El is probably the best site on all things Supergirl/Kara Zor-El; not only is the site updated regularly with the latest news on the last girl of Krypton and much more, but it's run by a truely dedicated fan.
The site has made an article on Summer Glau, who voiced Supergirl in the animated movie Superman/Batman: Apocalypse.
Seldom is there an actor or actress that comes along that doesn’t need opening credits to introduce who they are. They grace the screen with such elegance and beauty, rarely ever saying a word, but somehow, your enchanted. Like a chameleon, they fool you into believing who they are at that precise moment, and cast a spell on you throwing aside all doubts, and take you on a wonderful journey away from reality, and into a whole new world of existence. Their world.