How can you create Vital Signs or Life Support Lines?

Does anyone know how to do this or seen a tutorial on it? I really want to know how to create these.

Here is a good example of what I am talking about:
http://www2.warnerbros.com/ertv/home.html

If anyone can help me with this and send me an e-mail, I would really, really appreciate it.

Happy Holidays,
John Bauche
jbauche@uci.edu

Make a line like one of those vital sign lines and mask it over a greenbackground that will move across the screen. =)