Well, I'm a morning person, so working out in the AM is no hardship for me. But, I have had mornings where I needed something softer (usually after a bout of Leaner Legs!) and I have found that KPC starts out very nice and eases you into the workout. I really like that.
I sometimes will do a Tae Bo workout (the Cardio Circuit or Fat Blasting Cardio) or I'll do Rhythmic Step on a lower platform.