Thank you everyone for your suggestions! AJock's mish moshes are always highly creative and off-the-intensity-scale. I'm collecting them for the day that I buy a programmable multi-disk dvd player. I don't like cardio workouts where I have to pause frequently to change disks. I feel like the extra breather I get is "cheating."
What I ended up doing was.....an idea that I came up with on my own

I wanted to do the SB/SJP 90 min all-cardio premix, but didn't want to do it as Cathe configured it. So, I programmed my dvd player to do it this way:
SB warm up;
SB combo 1;
SJP combo 1;
SJP hi/lo 1;
SB Blast Challenge Round 1;
SB combo 2;
SJP combo 2;
SJP hi/lo 2;
SB Blast Challenge Round 2;
SB combo 3;
SJP combo 3;
SJP hi/lo 3;
SB Blast Challenge Round 3;
SJP combo 4;
SJP hi/lo 4;
SB stretch.
This took 90 minutes, and felt like a party. It was more fun than any workout has a right to be. The intensity levels were swirled through out. I was having so much fun, I didn't want the party to end, so after I ate a bowl of cereal, I pulled out good 'ol Push Pull for a quick and dirty total body weight workout. So, I think I've earned me a turkey dinner!
The next time I do this workout, I'm going to mix up the cardio segments so that I'm not doing all the 1's together, 2's together, etc. Just 'cause I get bored easy.
Gobble gobble!
Sandra