I've tried a few of the TurboFire workouts. I already had TurboJam, so I think it was easier for me to pick up the routines from the get-go without watching the New to Class segments.
I think they're really fun, and I do like the music. And I love the Stretch 10 class. I always felt most workout DVDs skimped on the cool-down and stretching aspects.
I just have to remind myself, that like TurboJam, it's going to take days, if not weeks, of doing the routines before I can do them without tripping over my own feet in certain parts. (I often go right when I should go left, or start with the wrong lead!)
They're up in your face, they don't think you belong
Man, you got it, you got it goin' on
What breaks the weak just makes you strong
You got game, baby bring it on, bring it on