Cardio/Kickboxing training vids - anyone uses them?

[PTB]

My wife just got Billy Blanks Tao-Bo AMPED.

I tried it for the first time last night.  My thoughts.... I'm in
terrible cardio and stamina shape. 

Using that 3lb amp bar can be killer on some movements.

I remember using the original tao-bo tapes 10 years ago, but I've focused
so much on lifting weights, I stopped using them.  Even now, I'll do a treadmill,
or elliptical once in a while but not much.

Have any of you used any of these workout vids like Tao-Bo, P90X, Buns of Steel, etc,
or work out to shows like ESPN's Gilad Jan*!wicz?

Do you find them useful in attaining your fitness goals.

[DK II]

I thought there was something written in very very small letters on the back of the vid, like this:


If you don't have tits or aren't completely gay, you should not use this video. Instead, man up, go to a gym and have some REAL MA lessons or work out. Thanks for your attention.

[mass 04]

No