Make your Sony Ericsson phone dance when it rings

Remember those .imy ringtone files from a long long time ago? That was before the midi and MP3 ringtones. I remember fiddling around with those when I had the Ericsson T28. Apparently it also works in the newer Sony Ericsson phones. These files made your phone vibrate and keypad/screen flash on/off in some funky sequence dictated by the .imy file.
It's nice to know that this still works...