The water dance is pretty subtle on my Anita too. I've found that it's easiest to see on the naked portafilter, where you can literally see the water bubbling as it leaves the bottom of the filter basket. With the spouted PF's, you can kind of see the water bubbling, but it doesn't hiss and spatter like it does in Dan's video clip. Maybe this is because I have the boiler to set to a fairly low 1 bar. Anyway, you might want to try using a naked PF if you have one.
I'm actually planning on getting Eric's adaptor with a built in digital thermometer just so I don't have to guess about water temps anymore. So far, my results seem pretty good, but I feel like I'm not being very scientific about my technique. I just flush about four ounces, then dose, distribute, tamp, flush another ounce, wait a few seconds, then pull my shot. It works OK, but it would be nice to know whether my technique is really in the right ballpark.
Lock and load!