Stayfit,
I absolutely love Turbo Jam, too. Some people said Charlene even has people do their own thing (ad libbing) - I love that and it is only for a few seconds - I love it when she says bust your move!
I love Tae Bo and Janis, too. But I must say Turbo Jamd has been the most fun I have had with kickboxing workouts.
And as to the form - well, I do karate kickboxing and have for two years and I am 6 months from a black belt - the form isn't perfect, but this is for the workout part of it - we aren't learning to spar or anything.
It is a fantastic core workout!
Cheryl