THERE BE SPOILERS AHEAD!!!
There are basically two ways to watch a show like Dollhouse. You can ignore all of the moral questions raised by it or you can think about them and stay up all night wondering if Echo's a slave and Paul is doing the right thing in Season One. If you just try to ignore all of the whole okay, Echo isn't actually an (job) thing you have yourselves a million different show-movies. The episode with the hunter becomes an action show and Grey Hour becomes suspense. But if you actually wonder about things like them being wiped it's different.
Dollhouse always delivers on two different levels. The first one is just what is Echo doing today? and the second is about the Dollhouse staff, Echo becoming a threat, and Paul. The plots are complex and hard to follow (I had to Google episode name explanation more than once) but they're also wonderful. You don't have to like Buffy/Firefly//Angel to like Dollhouse. I hated all three of them (how can people like Buffy when she's such a jerk? and Firefly is the boring-est show in the history of boring!) but I love Dollhouse. XD
So anyways. There's sex (the Dolls can be bought out for sex, for Pete's sakes, Echo plays a dude's dead wife for one night a year) and action (she also got hunted by some dude with a bow).
(Note: The following applies to Series One.)
Basically, how the show works is this: Adelle (the head of Dollhouse) gets a call from some dude that wants a Doll, and if it's Dollhouse they want Echo. She goes upstairs to tell Topher (the tech dude) what they need. Topher creates a customized personality and skill set for Echo to perform in the field. Boyd (Echo's handler/caretaker/rescuer) tells Adelle/Topher/Mr. Dominic how this is a sucky idea and gets ignored. Dr. Saunders (the house doctor) gets Echo from where she's been acting like a perfectly tranquil child with the other Dolls to go get a "treatment" (personality upload). Topher gives Echo the personality and Echo gets up, now acting like that personality. She gets taken into the field to do her job. If it's fake lover, she gets dropped off at her "husband's" house (the client in this case). On the other hand, if it's police officer, she gets delivered to the police base. If it's on TV, it's gonna get ugly. If it's a dangerous assignment, it's gonna take a turn for the worst. And nothing is ever just sex.
Right about then, its a commercial break and Agent Paul Ballard comes in. He's found something to do with the Dollhouse and he pursues it for ten minutes or so. Then back to Echo as the show is a typical action movie. At some point, something goes wrong with the technology. Maybe Echo starts remembering things from past assignments, maybe it's a remote wipe, whatever, and Topher insists it isn't his fault. The things go wrong-er and Boyd saves the day about half the time. The other half, Echo takes care of herself. This all depends on her imprint (personality), of course.
Echo goes back to the house and gets wiped. Alpha is referenced. Did anyone doubt he was coming back?
Of course, some episodes break the format. In Echoes, Echo gets her Caroline personality back by exposure to the campus she went to college on and remembers Rossum is bad. In Needs, the five Actives we see get their personalities back in an attempt to control them regaining memories by fulfilling their needs. In Haunted, Echo is a dead woman. And in Omega, Echo is imprinted by Alpha (yep.). Not even gonna talk about Epitaph One right now.
Also, there's the Caroline story arc. Echo was originally Caroline, who was a college student who took a stand against Rossum and is now a doll to pay for it. Once again, pretending Epitaph One didn't happen. And she comes back, of course.
See, it takes that long to explain it. So yes, complicated. Yes, sex (although no nudity, good job Dollhouse), swearing, and violence. Deep questions. Not for kids. (Yes I'm a hypocrite.) But awesome.