The concept of this television show is brilliant, but also problematic. I think that this show would have stand a better chance without Eliza Dushku as the lead actress. I like her, but in my opinion she doesn't have enough of an "average girl" and/or "good girl" vibe to be the center of a television show like Jennifer Garner in Alias or Sarah Michelle Gellar in Buffy the Vampire Slayer.
Better yet, I think that Dollhouse would've lasted a while longer if the lead character would have been someone else than a doll. Someone with memories of her or his own existence. Let's face it; it's hard for people to identify with a character who doesn't have a personnality or has more than one in the same episode. We, the viewers, are suppose to feel sorry for someone who can't even feel anything. We are suppose to care for a girl who doesn't care about the situation she's in because she's not even aware of it. Even if when the show begins Echo starts to show bits and pieces of awareness; it's not enough.
Even if Dollhouse is not perfect and that I understand why it was cancelled, it's still worth your time. The themes that are discussed are something we rarely see on television. Some of the episodes are priceless and the potential that Dollhouse has will charm you.