If you need to see chemotaxis in action, there are some pretty good videos online. I've seen one with examples of neutrophil chemotaxis.
I mean, it doesn't really look like much, it's just a cell moving in a particular direction.
It's interesting to think that this happens every time you injure yourself though, as the neutrophils race towards the site to help prevent infection.
But, anyway, if you need to see the cells in action for a class or something, there are a wide range of videos available.