Hi, Karen! Cathe also has plyometric drills in her original step-interval workout "Interval Max" (on the same disc as Rhythmic Step and Maximum Intensity Cardio), and Kick Max. There are also great plyo drills in her newest release, 4-Day Split Boot Camp (on the same disc as 4-Day Split Kickbox).
I love plyo drills too!
A-Jock