I LOVE Turbo Jam, BUT I think it's really important that new participants get a copy of the "Learn & Burn" DVD which came with the original set, because this is about the only place where Chalene really talks through form. I think she assumes in later workouts that everyone is graduating through the series as she produces them, so she doesn't give many form pointers.
Anyway, other than the L&B I really love and would recommend Cardio Party 3, Fat Blaster, Kick Punch & Jam, and the new ball workouts. I don't really care for the TJ sculpting stuff.
Good luck!
Marie