Exactly. Just add more sets, and start out slow and low, and work your way up to max height. Initially, I was doing joint rotations and marching in place, but that gets old quick.
I did see an intersting version of a dynamic warmup in the Dec. issue of Men's Health. I'll try to explain it.
From a standing position, squat, then jump vertical, and stretch your arms up. Land, rinse, repeat.
It'll get the heart rate up, and dynamically stretch out your lower and upper body. I haven't tried it yet, but it seems like a good dynamic warm-up to dynamic stretching.
"You do not truly know someone until you fight them."
- Seraph, The Matrix Reloaded